Master cylinder bore size motorcycle. 85mm x 43mm rectangle reservoir.

Master cylinder bore size motorcycle phillips traveller present-CB 650 retro VTR1000F3 XL250S riverbed rocket TS250[sold] Jul 28, 2014 · I was hoping to rebuild the stock front caliper, which has a big 38mm piston, and just buy a more modern master cylinder with a bore that will give me better feel. A: In your response regarding the CBX master cylinder, you said you didn’t know of any companies that provide sleeving service for Hondas or any other brand master cylinders. M50 brembos have a 30(could be 32) dia piston and a 17mm master bore is recommended for that. A smaller bore moves less fluid at higher pressure with increased pedal travel. Single master cylinders are usually available in two stroke lengths: 1" and 1. The bike is a '74 3C and the hydraulic clutch conversion was done by the previous owner. Pressure is determined by the lever and its leverage ratio. 2875mm master cylinder bore is the smallest recommended size for a two piston brake system but no piston size is specified. 99 Jul 22, 2004 · I had 27:1 ratio setup and it performed light years better than the grossly oversized 5/8" bore of the stock master cylinder. This size determines the volume of fluid displaced with each lever or pedal stroke. It's the stock setup: single piston caliper/single disc. Jun 17, 2024 · An incremental approach using the same Brembo RCS-15 master cylinder and EBC-HH pads is more budget friendly, if one only wants a master cylinder with better feel and ability to modulate the brake. Dec 1, 2008 · The R1 has a 14mm bore Nissin master cylinder 98-2001 are the same but the 2002-2003 are a little different and the brake lever will not work on the older model. 800psi possible with hyd brakes. Jul 18, 2022 · Next, master cylinders can come with many different piston diameters. 25 banjo bolt. The early bikes have the two piston calipers. 929 caliper pistons are 36mm and 30mm, 954 are 34mm and 30mm. Folding Lever Blade - Crash protection for your master cylinder with a fold-up lever. Thread bolt into master cylinder housing and tighten to 25–30 N·m (17–22 ft-lbs). 85mm x 43mm rectangle reservoir. Anyone know a bike with an 11mm bore? There are 3 key components to effective pressure delivery to your calipers in order to have adequate braking performance potential at the caliper. I'm thinking about getting a new master cylinder for my bike. Bore Size: 13mm. 9/16 gives a ratio of 28. Some guys like to use a 14mm master. 7mm (1/2") cylinder bore. 25 banjo bolt, which is the same size used on the OEM master The Radial Brake Master Cylinder from Brembo combines a forged master cylinder with an ergonomically designed span adjustable lever. 6” inches squared. Nov 4, 2011 · past-cb100,ts250,cb500,cb500,gs1000,gs650g. The stock rear MC is a 5/8” bore. What does this actually mean in the real world use? The capacity of the cylinder and size of piston will dictate how much actual fluid is moved. Use it for just about any vintage bike application. To get a crispier feeling, just mount a cheap 5/8" nissin MBC. com CALIPER PISTON AREA: Oct 5, 2014 · XJ1100 Maxim and Midnight Maxim models: the cylinder body will have the size 14 (meaning a 14mm bore) cast into it along the rear face of the piston bore, and the word NISSIN does not appear anywhere on the cylinder body. 25 banjo bolt, which is the same size used on the OEM master Includes brake light switch. Aug 23, 2013 · Based on the top calculation my master cylinder bore should be between 15mm (22. ) The 9/16 bore had a diameter that's 75% of the 3/4". However, a certain amount of fluid has to be displaced to bring the brake pads back into contact with the discs, which depends on how many ‘pots’ there are in… Jul 27, 2012 · Correct, bore = diameter of the master cylinder and piston. M4s have a 34mm piston dia and a 19mm master bore is recommended. pdf (71. Install Chrome Master Cylinder/Reservoir 9 8 5 7 10 11 3 1 4 6 2 is01013 1. That's a big MCS MC8 Master Cylinder 5/8 BORE, Twin Disc Yamaha Style . Polished alloy body and lever. Feb 24, 2020 · There is a whole complicated calculation you can do that factors in bike weight (laden), dick diameter, piston and M/C bore sizes etc, but while those all have an effect. Dividing 3631. 01. 99 $ 22 . 69 by 23 and using the surface area formula in reverse gives me a master cylinder size of 14. I have run into this Shop Drag Specialties Front Brake Master Cylinder Assembly 9/16" Bore Chrome at Deadbeat Customs. 12mm diameter is 6mm Radius, the area is Pi r^2 = 113. would increasing the master cylinder bore size increase more than just the 'feel' of the lever? i. Great replacement for your front braking system Fits 7/8 or 22. 30 or slightly high. Place free end of tube in a clean container. summitracing. For use with M10 x 1. Most sites are saying that 9/16 or 14. Good Afternoon, I would like to confirm the size of my clutch master cylinder. OEM: 06-1939/13 Note: Piston bore has been reduced from the original size of 5/8” to 13mm. removed (but leave on the arm, like it is shown on photo above). 5mm handle bar size. I have zx-14 master (radial) for the clutch. e would it put extra pressure on the rest of the system aswell and bust hoses and or seals? 6 days ago · Brake Master Cylinder, Compact Remote Mount, Single Bowl Design, 0. A master cylinder will not give you more brake torque and the only way is more calliper piston area, and/or a larger OD rotor. Essentially, you figure out the surface area of the master cylinder, and the caliper pistons and that will allow you to figure out a ratio. This mimics the effects of either a 1mm smaller or 1mm larger piston size of the selected hydraulic ratio. The master cylinder piston must fully retract. 4 mm^2 area. Genuine Front Master Cylinder Body Assembly suitable for 750cc & 850cc Norton Commando models (Not MK3). Too large of a bore can compromise feel for modulation. This critical ratio is of paramount importance in determining "feel". If we apply that same 100 pounds of force to the 7/8” master cylinder, using the formula 100 Aug 7, 2014 · If the pedal ratio is increased, there will be more travel at the master cylinder piston. ) « Last Edit: March 24, 2017, 11:34:43 PM by PeWe » Logged Shop Twin Disc Front Brake Master Cylinder with 12. The second number (18 or 20mm) is a measurement of the distance from the pivot point at the inside of the lever to where the lever connects to the piston in the middle of the lever. 99% sure it doesn't have air in it). you will have to check the pedal travel to see if it is feasible–if there is enuf room to push it further–some push rods have eccentric adjusters to set the pedal height Jul 9, 2021 · MASTER CYLINDER BORE DIAMETER and brake pedal ratio for 100 pound pedal effort. An original disc/drum master cylinder may feature a built-in residual valve for the drum brake circuit. For most applications, a 1-1/8″ bore size will work well. Explore our wide range of racing hardware and get the most out of your race car . 25" if possible). Color/Finish: Black Electroplated Master Cylinder Silver Lever Material: Cast Steel & Aluminum Fits: 7/8" Handlebars & Clip Ons Included: Radial Master Cylinder Reservoir Tank Hose Hose Clamp Reservoir Bolt (M6) Tank Fixing Nut (M6) Tank Stay Mirror Holder Half Clamp Mirror Hole Bolt (M10) Notes: For use with an M10 x P1. If a replacement disc/drum master cylinder is selected, an ex-ternal residual valve may need to be added. 9/16” is the standard bore size on most front master cylinders. The closest off the shelf master in that size is a harley 9/16" which is very common for single brake applications and sounds correct. From bore size to really breaking down pedal ratio and showing the simplest / most int Apr 22, 2014 · I'm pretty sure that the front master HD uses with the front version of that style caliper has a 9/16" bore (11/16" for dual disc. Jul 9, 2003 · First Post, Learned this while researching a master cylinder for my buddy's R1 race bike (for less money than a brembo radial&#33. (100 x ratio / sq. Oct 5, 2023 · Master Cylinder Selection. Bigger sizes are available from the auto parts store for 2-ton trucks and up. 5) Master cylinder bore too small creating excessive high line pressure. Stand the motorcycle upright so that the master cylinder is in a level position. Add front and rear master cylinder forces. Hopefully they are as good as the same if a tandem master cylinder with a common bore size is being used. 27:1 is just a little bit sweeter. 929 has a 19mm bore, and 954 has 17mm bore. 92 ratio) and 14mm (29. " Correct! Sep 19, 2018 · I've used a few different master cylinders as I've evolved my 1100, the TL1000R clutch m/c is neat and works fine - another good upgrade was using a radial brake m/c from a GSXR1000 K5-K8, marked 3/4 (inch), I've used a 5/8 m/c from a late GSXR too, worked well, with a little more lever movement. Choosing the right brake master cylinder can seem like an impossibility. View the conversion chart to figure the total bore area for your brake setup. (I'm 99. — Floyd Webb/via email . 2. The benefits of using a high-performance brake master cylinder include enhanced braking precision, improved modulation, and increased safety. A) Sleeved only $165. If you have the budget buy good quality new, if you are trying to keep it on the cheap just buy a used OEM one of the right bore size off ebay from a major manufacturer. Align hole in brake hand Jan 11, 2024 · You indicated that the master cylinder bore for your bike is 14 mm. This is not only important for providing sufficient pressure through the braking system to obtain the optimum braking performance from the installed hardware, but can also have an impact on the feel of the brake pedal for 3 Way Lever Ratio - The master cylinder lever has a clever 3 way adjustable pivot point. If fluid pressure at the caliper measures low, reducing the master cylinder’s bore size will Dec 20, 2021 · Which master cylinder should I use for Drag Racing? 15/16 7/8 drag racing master cylinder - pedal ratio - which master cylinder is best for drag racing? what brake master cylinder should I use - how to choose the correct master cylinder for drag race cars - sizing Color/Finish: Black ElectroplatedMaterial: Cast Steel & AluminumPiston Size: 19mm / 5/8" StandardFits: 7/8" Handlebars & Clip Ons For use with an M10 x P1. What you need to choose the right brake master cylinder . Jun 23, 2023 · Wilwood makes a wide assortment of small, lightweight master cylinder kits that are suitable for high performance street and racing applications and they are available in a variety of bore sizes. On stock motorcycles the rule of thumb is: 5/8" bore for single caliper early F & R and most 77-83 dual disc front 9/16" bore for later front single caliper 84 up Jul 19, 2024 · Here's a breakdown of how different master cylinder sizes influence braking: The master cylinder's bore diameter (the internal diameter of the cylinder where the piston moves) is a key factor. 4 to get a size which will work with one caliper. Takes a 10mm x 1. At least based off forum talk(a different forum). From there you can compare what making changes to either the caliper piston sizes or master cylinder size will do. Suitable for pre 1997 750cc motorcycles. Bigger the bore the larger the VOLUME of fluid moved per stroke. AC DELCO 18M91 – 77 corvette 1-1/8″ bore short pushrod, cast iron Jun 28, 2020 · As far as I was aware the diameter of the master cylinder bore that’s optimum is based on the caliper piston size. 58. May 19, 2020 · Follow this guide to learn how the change of bore size on a master cylinder affects a four-wheel disc brake system. Total Length 242mm Master Cylinder Size 96mm x 93mm. 9K views 2 replies 2 participants last post by Rodders_SS939 Sep 9, 2024 Insert bolt through washers and fitting. Author Topic: Input about front master cylinder size for CB750 Dual disc modification ! (Read 9638 times) (Read 9638 times) 0 Members and 1 Guest are viewing this topic. I Oct 3, 2019 · Clutch master cylinder Bore size?? Jump to Latest 1. 25 banjo bolt, which is the same size used on the OEM master cylinders on most Honda, Yamaha, Kawasaki and Suzuki models, 02 and newerNote: many Ducati and older Suzuki motorcycles are M10 x P1. Brake Master Cylinder/Reservoir 1. 29” center to center and a 10mm x 1. The basics of master cylinder bore size and how it affects braking performance and pedal feel. Cover gasket 6. If you go with a 17. Get Free US Shipping when you spend over $100. 25" (go with 1. 25mm banjo bolt. Reproduction complete brake master cylinder and lever assembly. Bore Size, Aluminum, Black E-coat, Kit. 1911688 Motorcycle Rear Brake Master Cylinder, Rear Foot Brake Master Cylinder 1912301 Replacement for Polaris 450 Farmhand Hawkeye 325 2X4 450 500 570 800 Sportsman 400 HO 2X4 Sportsman $22. thought i may as well get a big one in preperation for brake upgrades. I bought a 19/18 and it is the best single performance improvement I've made to the bike. 789 times the pressure applied–less pedal pressure for the same fluid pressure. Sep 18, 2013 · Gen 1 busa and the vmax have the same size front brake master cylinder. If the master cylinder bore size is decreased, the piston has to travel further to move the same amount of fluid. the most important issue is M/c bore are to caliper bore area set out in that Vintage Brake chart. If your brakes are too sensitive, then a LARGER bore size will INCREASE pedal effort. Early Yamaha style. com • Sales: (805) 388-1188 • E-mail Tech Assistance: info@wilwood. 47 ratio). The bottom of the reservoir has a small (1/4” diameter) hole in where the fluid level sensor wires exit the inside of the reservoir. Same goes for too small. https://www. The Radial Brake Master Cylinder from Brembo combines a forged master cylinder with an ergonomically designed span adjustable lever. Jun 8, 2020 · More caliper piston volume needs more master cylinder piston volume (bore and stroke). Color/Finish: Black Electroplated Material: Cast Steel & Aluminum Dimensions: 17mm Piston Size Fits: 7/8" Handlebars & Clip Ons Kit Includes: Radial Master Cylinder Reservoir Tank Hose Hose Clamp Reservoir Bolt (M6) Tank Fixing Nut (M6) Tank Stay Mirror Holder Half Clamp Mirror Hole Bolt (M10) Notes: For use with an M10 x P1. 11/16” is larger and typically reserved for dual disc set ups or larger rear brake calipers that require more force to move more caliper piston surface area. Side mounting with a dimension of 2. Jan 16, 2022 · The smaller the bore size, the less effort is required for the same braking force, so you can apply more fluid pressure and brake harder. Insert bolt through washers and fitting. Part Number: WIL-260-13619 4. 22 kB - downloaded 156 times. Jun 30, 2014 · Many have asked me to help with changing from a conventional axial front master cylinder (MC) to a radial, and in trying to give accurate information I came up with the following spreadsheet to help determine what piston size radial MC would be appropriate. Screw Figure 4. See Figure 4. The old brake setup on my 83 was twin 10” discs with single callipers using the 3/4” bore master cylinder. You might be able to ride your bike home! Dec 30, 2016 · So assuming the piston area of the caliper stays the same, what happens when you change the bore size from say a stock 12mm bore. 7. 23:1 will be a big improvement. The OBP Remote Master Cylinder comes in 3 different sizes at Racetech Australia. This page displays Master Cylinder Kits: motorcycle Determine master cylinder forces from hydraulic pressures and master cylinders cross sectional areas. Advanced master cylinders often include adjustable levers and piston sizes, allowing riders to customise the brake feel and response to their preferences. Jan 16, 2022 · The smaller the bore size, the less effort is required for the same braking force, so you can apply more fluid pressure and brake harder. The bore size is typically related to the diameter of the bore that the master cylinder piston resides in. Short but extremely useful How To Video about proper brake practices. Does anyone know what size the pistons are? What's the bore of the stock master cylinder? Aug 15, 2013 · I'm pretty sure that my thinking is right on this, but I'm hoping someone can confirm or disconfirm. Larger-bore master cylinders move a high volume of brake fluid, at lower pressure with less pedal travel. 6. I don't remember if caliper measurements are correct but 954 is 2 mm smaller on the upper piston. Stock bore is something like 1/2" and rebuild kits are $30-50. 0 and will require a new banjo bolt Wilwood’s ATV Master cylinder is available in both L/H and R/H mounting configurations and 19mm bore. Along with the coated pistons from the 675 daytona (they fit plug'n'play'), you get a break upgrade that is cheap and more than suffient on the road and occational track use. ive found the G60 patrol 1" (JB1419) for A disc/drum master cylinder requires more fluid vol-ume for the disc brake circuit, so the disc reservoir will be larger. Going too big with the master cylinder piston size may not always be bad for an experienced rider but using too small of master cylinder piston will create extra travel in the lever and result in slower reacting brakes. For a 41 mm single piston caliper with a 14 mm master cylinder, the table returns a value of 8. Aftermarket front brake master cylinder with lever 5/8inch bore size. Flat washer 11. Jul 3, 2007 · The correct bore size of the front or rear brake master cylinder is dictated by the number of calipers used and size and number of pistons on each calipers. inch of bore) 4700 Calle Bolero • Camarillo, CA 93012 • wilwood. com FREE DELIVERY possible on eligible purchases Jun 7, 2023 · A larger master cylinder bore will give a firmer lever with less travel, and conversely a smaller MC bore will give more leverage, but at the expense of requiring more travel to get the same braking force. There is some math out there that you should do when considering changing master cylinders. Vintage Brake's chart suggests a much smaller bore would work better. If removed, install length of clear plastic tubing over caliper bleeder valve. Looks good. 0 fluid outlet. Reservoir 7. 12. prevents the master cylinder from excessively banging the snap ring stop inside the master cylinder bore (visible under the rubber boot). May 25, 2019 · To achieve a firm lever feel, other users have suggested going for a 23:1 ratio. 7mm Bore at Motorcycle Products Ltd. Adjust the stop so the pedal stops returning at the point when the master cylinder piston retracts against the snap ring, Figure 1. Pedal Ratio, Bore Size (Fluid Volume Availability), and Brake Pressure (derived from pedal ratio, master cylinder size, and input force from the driver). Oct 29, 2013 · TO have the same braking result, you will need to move the brake pedal 1. By calculating the area in inches squared (bore x bore x . Calculate size of the master brake cylinder; Different sizes of the master brake cylinder; Most common setup of master brake cylinders Nov 5, 2011 · My '75 has a spongy feel to the lever even though I've bled 10 gallons of fluid through it, added stainless lines and tried three different master cylinders. 7mm) bore and a 14mm bore is minimal but is also an almost 10% overall increase. If the donor only had a single front caliper, stick with that size master cylinder (either from the original bike, or a generic from eBay). 18 October 2012 Jan 13, 2009 · The diameter of the piston in a radial master cylinder (19mm) does not correlate to a standard master cylinder piston size. I track quite a bit and was experiencing fluid fade (mushy lever) at the end of most sessions. Handlebar clamp 3. Mar 28, 2016 · Most master cylinders have a bore size of 5/8-inch to 1 1/8-inch. Front Master Cylinder Ratio Chart. Aug 2, 2007 · is bore size overly important when replacing master cylinders? the difference between a 1/2inch (12. 179mm. 785”) for any master cylinder size, you can calculate how much pressure change would be affected by a bore size change. Need a tight fit of the sleeve. Easier than rebuilding the old one. Cover screw 10. 5mm R1 master cylinder that is 240. Fits 22mm (7/8") handlebars. 87mm Bore Yamaha 4G0-25850 4K0-25850 Mar 24, 2017 · Front Master Cylinder to Wheel Cylinder chart . Period correct for most 70's motorcycles with single or twin disc front brakes. Pivot pin 8. Retaining ring 9. Here's a cut & paste from another site you may find interesting. It makes the lever easier to pull in, if you have a DD clutch. Match master cylinder to system. Shop Twin Disc Front Brake Master Cylinder with 16mm Bore Pre 1997 750 at Motorcycle Products Ltd. But because it's area, not diameter, that you use for the ratio, the 9/16 bore has an area that's 56% of the 3/4" bore's cross sectional area. Typically, a master cylinder has approximately 1-1/2-inch to 1-3/4-inch of stroke (travel). The master cylinder is a Brembo with the clear, attached and round reservoir. The information posted on Vintage Brakes website is dead on. Dec 10, 2017 · The R6, 15+ R1 and bike's with brembo M50's (16+ zx10r, some 1199 and RSV4) have calipers with a piston diameter which is smaller than usually used, 50mm, therefore having appropriate leverage power with a master cylinder which has a slightly lower bore/pivot, which is why either 16x19 is used or the Brembo RCS 17 which is specifically designed with this in mind (adjustable between 17x18 and Jul 7, 2024 · Bike master cylinders are cake to rebuild if the metal is in decent condition and you have the rebuild parts. 00 - Send us empty housing, plastic reservoir and all fittings,pushrod etc. 2729. This KZ650 owner tried a 14mm master cylinder with dual disks and came up with what I consider to be a rather conclusive test. The numbers at the bottom are 10. 30mm offset between cylinder bore and Jan 11, 2011 · my brake master cylinder is crook, so im going to get a new one. Brake lever 4. Feb 14, 2018 · They installed a brass sleeve of the original bore size and now it’s better than new with no more corrosion issues. Replacement levers are available separately including Flip-up levers. the stock master is 7/8" (JB1133, $86) and the 280zx (JB1361) is 15/16", a nice upgrade but really overpriced at ~$170. 16mm, 17mm, 18mm, 19mm, etc. And smaller sizes are available as OE parts for small European or Japanese cars. If the donor had two calipers, divide the master cylinder diameter by 1. BMW R60 thru R90, R100 and R120 motorcycle brake master cylinder. From what I understand, I'll need a master cylinder with a 14mm bore. 16mm (5/8") cylinder bore. This means that (made up numbers coming up) for every 15mm you push the master cylinder in, you move maybe 5cc of fluid. The complete master cylinder and brake lever from the 02-03 will work good if you use the complete set up. 10mm right hand thread mirror mount. A larger piston is going to move more fluid with the same amount of lever movement. Further, I didn't feel like I had enough front brake. Master cylinders are available in a choice of bore sizes which can alter the amount of braking force and fluid displacement which are applied when the brake pedal is pressed. 25mm banjo bolt exit on left of master cylinder. Jun 24, 2008 · While I can't answer the bore question, I can tell you about my experience with a Brembo master cylinder. 6) Master cylinder deflection. 5/8" As far as the clutch goes, stock vmax is 5/8". Mar 23, 2021 · Buy M MATI Front Brake Master Cylinder 9/16 Bore for Honda Motorcycle CB350 CB360 CB400 CB450 CB500 CB550 CB750 45500-410-671: Brake Accessories - Amazon. With hydroboost, you will need the proper master cylinder bore size. 14mm piston or 15. If dual cylinders are being used then hopefully the balance bar is set to Jan 16, 2022 · The smaller the bore size, the less effort is required for the same braking force, so you can apply more fluid pressure and brake harder. I've tried a few different master and like the way it works over all of them. 750 in. Master cylinder housing 2. 99 Dec 2, 2014 · Assuming you are upgrading your brakes to a dual disk setup it makes sense to me to employ the same master cylinder size specified by the engineers. com/search/department/brake-systems/s Find out the size of the master cylinder of the bike it came from. Available in various bore and ratio sizes allowing for a fully customisable set-up to suit different applications, leverage and performance. 266x the distance (to get the same fluid volume) and exert . I'd use a brass sleeve, need to address the burr's from drilling the ports. A 7/8” bore master cylinder has a bore area of . Dot 5 versions use seals specially designed for Dot 5 silicone fluid use. 8mm bore size, for single or twin disc. - It is not like that and you will understand why in a simple way now. V-Twin Manufacturing Motorcycle Rebuild kit with 5/8" bore for rear master cylinder assembly - Sold Each Motorcycle Rear Master Cylinder Rebuild Kit Rebuild kit with 5/8" bore for rear master cylinder assembly Fits: Custom application for master cylinder UOM: 1 - EA Country of Origin: Imported Tech Aug 6, 2017 · Look at the master cylinder, there are 2 holes from the reservoir to the bore, record the sizes, note that one is much smaller than the other. 50mm x 29mm rectangle reservoi View Details Twin Disc Front Brake Master Cylinder with 15. Suits twin disc application, Left hand thread mirror mount. 67 out of 5 stars 1911688 Motorcycle Rear Brake Master Cylinder, Rear Foot Brake Master Cylinder 1912301 Replacement for Polaris 450 Farmhand Hawkeye 325 2X4 450 500 570 800 Sportsman 400 HO 2X4 Sportsman $22. I'm not sure of the exact size of the piston in the rear brake caliper, but taking a crude measurement on my T120 gives me something in the neighborhood of 41 mm. While attending Vintage Days West, and thoroughly enjoying it, I was reminded that many of the people I had occasion to talk to, lacked an understanding of the importance of master cylinder to wheel cylinder ratios. Black body and lever. 06-1939/13 Front Master Cylinder Body Assembly – 750 & 850 Commando. Apr 28, 2008 · All non-radial master break cylinders up to 07 are 14mm nissin. Master cylinder cover 5. very important the position and size of the holes. Apr 16, 2012 · Consider the fact that the bore of the master cylinder is much smaller than the combined bores of all the pistons in your brake calipers. You now get excellent pressure on the brake pads. Stiffen master cylinder mounts Brakes are locked up after run: The piston in the master cylinder is not being allowed to return to the full retract location, when released. Will this still be okay or do I need to change to a different size master? I’m also replacing the stock rear calliper to a performance machine 4 piston (0052-2503) . 04 mm^2. 11mm cylinder bore. nzdi soqzh vqsz squdsv hjddwb imaju mzuiumy lcaj ithlh xlg qwuiv ngicwym opjk jmusgc btspv