GP 310 Front Motorcycle Caliper:
Description
Polished
Chrome
Front Left Hand Caliper (single) 1984-1999
120-7737-P
120-7737
Front Right Hand Caliper          1984-1999
120-7736-P
120-7736
Front Left Hand Caliper (single) 2000-Present
120-7739-P
120-7739
Front Right Hand Caliper          2000-Present
120-7738-P
120-7738
Optional Mounting Bolt Kit, P/N: 230-4237

GP 310 Rear Motorcycle Caliper:
Description Bracket Not Included
Polished
Chrome
Rear Right Hand Caliper (Std 3.50" Mount)
120-7740-P
120-7740
Rear Left Hand Caliper   (Std 3.50" Mount)*
120-7741-P
120-7741
Optional Mounting Bolt Kit, P/N: 230-4236
* Use with Dyna "Bottom" Bracket Kit

GP 310 Rear Motorcycle Caliper Brackets:
GP 310 Rear Bracket Description
Polished
Chrome
Softail® Bracket Kit                 1984-1999
250-8035-P
250-8035
Softail® Bracket Kit                 2000-Present
250-8036-P
250-8036
Dyna Bracket Kit                          1984-1999
250-8034-P
250-8034
Dyna Bracket Kit                          2000-Present
250-8033-P
250-8033
Dyna "Bottom" Bracket Kit   1984-1999
250-8252-P
250-8252
Cruiser Bracket Kit                 1984-1999
      Call for Availability
Cruiser Bracket Kit                 2000-Present
      Call for Availability
Optional Mounting Bolt Kit, P/N: 230-4236 is included with Brackets
*Locates caliper on the bottom side of the rotor, use with left hand GP 310 rear caliper.

GP 300 Front Motorcycle Caliper:
Description
Polished
Chrome
Front Left Hand Caliper (single) 1984-1999
120-3933-P
120-4243
Front Right Hand Caliper          1984-1999
120-3945-P
120-4242
Optional Mounting Bolt Kit, P/N: 230-4237

GP 300 Rear Motorcycle Caliper:
Description (Bracket Not Included)
Polished
Chrome
Rear Caliper
120-3935-P
120-4244
GP 300 Rear Bracket Description
Black
Softail® Bracket Kit   1984-1999
250-4235

Motorcycle Brake Fluid:
Harley Davidson® Motorcycles specifies use of DOT 5 Silicone brake fluid because of its minimized impact on painted surfaces. Wilwood disc brake calipers will work with either fluid, but never mix DOT 5 Silicone brake fluid with DOT 3 or 4 fluids.

Changing brake fluid on a regular basis is highly recommended and esily accomplished when changing brake calipers. DOT 3 and DOT 4 brake fluids are superior for general brake system use as well as high performance applications. For best results, Wilwood Engineering recommends the use of Hi-Temp 570 DOT 3 brake fluid (P/N 290-0632) or EXP 600 Plus DOT 4 brake fluid (P/N 290-6209).