LEFT FULL KIT ATE REPLACEMENT
Replace the original ATE swinging single piston caliper with a modern radial 4 piston caliper and a 320mm floating rotor used on Ducati sport bikes. This designs works with OEM spoked wheels, snow flakes, Lesters or Morris aluminum rims. Compatable with 1974-84 airheads equiped with swinging ATE calipers/6,/7, AND 90S R80 and early R100's.
This popular caliper and hub adapter set includes everything required for a single caliper and big 320mm rotor swap:
1. left side R90X caliper and adapter kit (Mounting Hardware is included).
2. High Quality Metal Gear 320mm semi floating brake rotor.
3. Steel Braided full length hose with a swivel Male fitting at the Master Cylinder and a banjo fitting at the caliper end. (please specify silver or black)
4. A left side 4 pot caliper. disassembled, cleaned, inspected and resealed. New pads included and installed. Choice of calipers
BMW Brembo S1000RR K47 caliper. 34/34 pistons. Teams well as a single caliper with a well maintained OEM under tank or bar mounted 13 to 15mm Master Cylinder (not included). Nice and easy hydraulic ratio. Lighter and better stopping power than dual OEM ATE brakes. Available in Gold. I can paint them silver or black by special request.
Ducati Brembo 696, 796 caliper. 32/32 pistons. Teams well as a single caliper with a well maintained OEM under tank or bar mounted 12 to 14mm Master Cylinder (not included). Nice but firm hydraulic ratio. Lighter and better stopping power than dual OEM ATE brakes. Usually only available in Silver. I can paint them black by special request.
Left calipers are the most requested radial 4 piston calipers for Airheads. I do not always have stock on hand. I can get stock fairly quickly, but please allow 1.5 to 2 weeks to aquire and refurbish the calipers.
PLEASE BE AWARE THAT THE LEFT FORK LOWER SLIDER DOES NEED TO BE MODIFIED TO ACCEPT THE CALIPER ADAPTER. I can supply extra lower sliders upon request and at extra cost.
FITMENT
Fits these Bikes
MODEL BEGINING ENDING R90S 9/1/1973 6/1/1976 /6,/7 7/1/1973 4/1/1980 R100S 5/1/1976 7/1/1980 r80TIC 9/1/1978 11/1/1982 R100/7T,T 4/1/1977 10/1/1984 R100RT 6/1/1978 10/1/1984 r80 4/1/1977 11/1/1984 AND PERHAPS OTHERS USING FORK LEG
31 42 1 233 509 OR 31 42 1 233 511
DETAILS
Note: Some modification of the fork leg is required with this design. Sold as a Hub adapter and caliper adapter for one side only.
As a single brake this system works well with the original 13-15mm master cylinder. With a dual set up a 17mm OEM mastercylinder (34 31 1 234 379) should be used or an upgrade to an 18 or 19 mm bar mounted system from a newer motorcycle.
OTHER
Calipers Tested:
BMW S1000RR 2009 -18 perhaps other years. These have 34/34 pistons and a slim design that provide lots of clearance for spoked wheels
34 11 7 714 783 Left and 34 11 7 714 784 right.
BMW R1200 1250 S1000XR 2001-2020
34 11 8 556 205 Left and 34 11 8 556 206 right
Dual Ducati 1098,696,796,and 848 2010-13 (perhaps other years) Brembo radial 32mm 4 piston calipers USED AS A SINGLE BRAKE with 12 to 14mm OEM Master Cylinders.
For dual brakes will work with a 15mm to 17mm Master Cylinder (34 31 1 234 379).
Several other European calipers will probably work, the above are what I have been able to test.
Rotors used, note: do not use ABS rotors, the raised tops on the buttons will not clear your fork lowers
2002-2007 Ducati 749, 848, 999 rotors are 320mm.
Brembo/ Ducati part# 49240751A, 49240551A
EBC part# MD622X
NG part #1051
Also vailable used (usually low miles) on eBay
2007-2010 Ducati 1098, 1198, 1199 rotors are 330mm.
Brembo/ Ducati part #'s 49240901A, 49240891A,
EBC part # MD694X
RETURNS
Return within 30 days of receiving your order for full refund.
Items must be properly packaged and in the same condition as received. Please contact matt@r90xdesigns.com before returning merchandise.
The customer is responsible for return shipping charges.TERMS
Disclaimer: With purchase, buyer is agreeing to the following: Buyer or buyer’s mechanic will inspect the part purchased before installation of the item. It is the buyer’s responsibility to ensure parts are fully functional and within specifications before installation. Buyer takes full responsibility for parts, modifications, and installation. We are not responsible for any damage or accident that may occur while using purchased item. Any liability for consequential and/or incidental damages is assumed by buyer.
That said, these improvements, correctly installed, will improve the safety of the motorcycle.
Please contact matt@r90xdesigns.com with any questions.