Rear Brake Kit – Part No: 140-10723
Call (805) 388-1188
GP310 Motorcycle Rear Sprocket Brake Kit
Prod #: 140-10723
Price: $879.98
Rear Brake Kit - Rear Kit

Kit Summary
Rear End Axle: OEM
Axle Offset: 0.00
Mount Type: Lug
Caliper Type: 4 - Chrome
Rotor Diameter: 10.50
Min Wheel Diameter Req'd*:
*This Brake Kit may fit -inch wheels. Please refer to the wheel clearance diagram to check to see if it will fit your specific wheel. Wheel Clearance Diagram
UPC Number
UPC 889545009927

WARNING: Cancer and Reproductive Harm
Applicable to Brake Pads Only

GP310 Motorcycle Rear Sprocket Brake Kit

Wilwood’s Sprocket Brake kits 140-10723 / 140-10723-P are for a 51 tooth sprocket and L/H caliper application. The sprocket-rotor bolt circle is consistent on all Harley Davidson models with a 5 x 3.25” bolt circle. The accompanying billet aluminum GP310 caliper is a 4 piston powerhouse, available in either chrome or a bright polished finish. Sprocket brake kits utilize a unique bracket design that combines the right elements of strength and style for your custom application.

Fitment & Installation Details

GP310 Motorcycle Rear Sprocket Brake Kit Assembly Schematic

Rear End / Axle Housing Flange
Confirm The Configuration!

OEM Flange
Confirm Offset Measurement!

Search Rear Kits By Rear End/Axle Offset
caution AXLE OFFSET: 0.00
Check the diagram above and verify this measurement. This kit may be available in several different offsets.
Please call Wilwood with any questions: (805) 388-1188

Wheel Clearance Assembly Instructions

1. Kit contains: 51 tooth sprocket

Compatible Vehicles for this Brake Kit

BRAKE KIT:   GP310 Motorcycle Rear Sprocket Brake Kit

This Brake Kit is Compatible with the Following Vehicle Makes:  

Note: Kit may fit other vehicles, call Wilwood Sales⁄Tech Support at (805) 388-1188 for more information.

REAR END:   OEM - Rear Kit


For a Complete Listing including ALL Makes, Models and Years, Please click on the Axle Offset.

Kit Components & Specifications
Left Hand - Part No: 120-10175
Right Hand - Part No:
Type: GP310
Finish Color: Chrome
Piston Count: 4
Piston 1 Bore (in): 1.25
Piston 2 Bore (in): 1.25
Piston Area (In²): 2.46
Piston Type: Stainless
Mount Type: Lug
Brake Pad Plate: 6208
Brake Pad Area (In²): 3.65
Brake Pad Volume (In³): 0.63
Pad Compound: BP-10
Left Hand - Part No: 160-10470
Right Hand - Part No:
Type: Motorcyle (sprocket)
Style: Drilled
Surface Finish: Micro Polish
Material: Stainless
Outside Diameter (in): 10.57
Width (in): 0.35
Vane Count: Solid
Design Type: Solid
Bedded: No
Dynamically Balanced: No
Rotor Hats
Hat - Part No:
Finish Color:
Hat Offset Dimension (in):
Bolt Circle 1:
Bolt Circle 2:
Bolt Circle 3:
Stud Diameter - BC 1:
Stud Diameter - BC 2:
Stud Diameter - BC 3:
Hub - Part No:
Finish Color:
Mount Style:
Bolt Circle 1:
Bolt Circle 2:
Bolt Circle 3:
Stud Diameter - BC 1:
Stud Diameter - BC 2:
Stud Diameter - BC 3:

Parts & Accessories
Caliper Parts
O-ring Kit: 130-3602
Replacement Dustboot: N-A
Replacement Piston 1: 200-3533
Replacement Piston 2: 200-3533
Replacement Piston 3: N-A
Replacement Piston 4: N-A
CrossOver O-Ring Kit: 130-10540
Crossover Tube: N-A
Self-Bleeder Tube: N-A
Bridge Bolt Kit: N-A
Wear Plate - Left Hand: N-A
Wear Plate - Right Hand: N-A
Pad Retainer: 180-10341
Bleed Screw Kit: 220-3537
Brake Lines
Bolt Kit:
Bolt Kit:

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