Wilwood Caliper-GP310 Chrome Rear 1.25in Pistons .25in Disc

SKU: WIL120-7741

Brake Calipers

WIL GP310 Caliper

Wilwood

Wilwood Caliper-GP310 Chrome Rear 1.25in Pistons .25in Disc

SKU: WIL120-7741

Brake Calipers

WIL GP310 Caliper

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description

Wilwood's GP310 Rear motorcycle disc brake caliper has been designed and engineered for use on 1984 - present Harley-Davidson® Motorcycles. Built around a 4-piston, high performance powerhouse, this billet aluminum caliper brings distinctive, bolt-on styling: Bracket-mounted calipers with a standard 3.50" mount spacing are available for all most models (except Springer and 4-speed FL models).

Part Type

Brake Calipers

Data: v4.2 - Upd: 2026-10-02 09:50:07

Specifications

Product Attributes - UPC: 889545005721
Product Attributes - Brand: Wilwood Disc Brakes
Product Attributes - Notes: For use with Dyna 'Bottom' bracket.
Product Attributes - Quantity: Sold individually.
Product Attributes - Part Type: Brake Calipers
Product Attributes - Thread Size: 1/8 in. NPT
Product Attributes - Caliper Logo: Wilwood
Product Attributes - Product Line: Wilwood GP310 High Performance Billet Motorcycle Calipers
Product Attributes - Caliper Color: Chrome
Product Attributes - Caliper Series: GP 310
Product Attributes - Remanufactured: No
Product Attributes - Caliper Material: Aluminum
Product Attributes - Brackets Included: No
Product Attributes - Fittings Included: No
Product Attributes - Brake Pads Included: Yes
Product Attributes - Piston Diameter (in.): 1.250
Product Attributes - Rotor Thickness (in.): 0.250 in.
Product Attributes - Caliper Piston Quantity: Four
Product Attributes - Parking Brake Provision: No
Product Attributes - Manufacturer's Part Number: 120-7741

Reference Information

Brand Name/s	Wilwood
StreetFX SKU	wil120-7741
SFX Item ID	4406431
Supplier Item Code	4406431
Manufacturer SKU	120-7741
Manufacturer UPC	889545005721
Alternative References	gp310, Caliper-GP310, 1.25in, .25in

Compatibility

Application Data

Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLD SWITCHBACK
Beginning Year 2012
Ending Year 2016
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLH ELECTRA GLIDE
Beginning Year 1984
Ending Year 1985
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHRCI ROAD KING CLASSIC
Beginning Year 1998
Ending Year 2006
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHRC ROAD KING CLASSIC
Beginning Year 2007
Ending Year 2013
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHRI ROAD KING
Beginning Year 1996
Ending Year 1997
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHRI ROAD KING
Beginning Year 2000
Ending Year 2006
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHR ROAD KING
Beginning Year 1994
Ending Year 2016
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.

Brake Caliper Search	Search by make and model
Make	HARLEY DAVIDSON
Model	FLHRSE3 SCREAMIN EAGLE ROAD KING
Beginning Year	2007
Ending Year	2007
Caliper Position	Rear Left
Application Notes	Will not fit 4 speed models.

Brake Caliper Search	Search by make and model
Make	HARLEY DAVIDSON
Model	FLHRSE4 SCREAMIN EAGLE ROAD KING
Beginning Year	2008
Ending Year	2008
Caliper Position	Rear Left
Application Notes	Will not fit 4 speed models.

Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHRSE5 CVO ROAD KING
Beginning Year 2013
Ending Year 2013
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHRSE6 CVO ROAD KING
Beginning Year 2014
Ending Year 2014
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.

Brake Caliper Search	Search by make and model
Make	HARLEY DAVIDSON
Model	FLHRSEI2 SCREAMIN EAGLE ROAD KING 2
Beginning Year	2003
Ending Year	2003
Caliper Position	Rear Left
Application Notes	Will not fit 4 speed models.

Brake Caliper Search	Search by make and model
Make	HARLEY DAVIDSON
Model	FLHRSEI SCREAMIN EAGLE ROAD KING
Beginning Year	2002
Ending Year	2002
Caliper Position	Rear Left
Application Notes	Will not fit 4 speed models.

Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHRSI ROAD KING CUSTOM
Beginning Year 2004
Ending Year 2006
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHRS ROAD KING CUSTOM
Beginning Year 2004
Ending Year 2007
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHS ELECTRA GLIDE SPORT
Beginning Year 1984
Ending Year 1984
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHS ELECTRA GLIDE SPORT
Beginning Year 1987
Ending Year 1993
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHTC ELECTRA GLIDE CLASSIC
Beginning Year 1984
Ending Year 2005
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHTC ELECTRA GLIDE CLASSIC
Beginning Year 2007
Ending Year 2013
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.
Brake Caliper Search Search by make and model
Make HARLEY DAVIDSON
Model FLHTCI ELECTRA GLIDE CLASSIC
Beginning Year 1996
Ending Year 2006
Caliper Position Rear Left
Application Notes Will not fit 4 speed models.

Brake Caliper Search	Search by make and model
Make	HARLEY DAVIDSON
Model	FLHTCSE2 SCREAMIN EAGLE ELECTRA GLIDE 2
Beginning Year	2005
Ending Year	2005
Caliper Position	Rear Left
Application Notes	Will not fit 4 speed models.

Brake Caliper Search	Search by make and model
Make	HARLEY DAVIDSON
Model	FLHTCSE SCREAMIN EAGLE ELECTRA GLIDE
Beginning Year	2004
Ending Year	2004
Caliper Position	Rear Left
Application Notes	Will not fit 4 speed models.

Brake Caliper Search	Search by make and model
Make	HARLEY DAVIDSON
Model	FLHTCU ELECTRA GLIDE ULTRA CLASSIC
Beginning Year	1989
Ending Year	1997
Caliper Position	Rear Left
Application Notes	Will not fit 4 speed models.

Brake Caliper Search	Search by make and model
Make	HARLEY DAVIDSON
Model	FLHTCU ELECTRA GLIDE ULTRA CLASSIC
Beginning Year	2007
Ending Year	2016
Caliper Position	Rear Left
Application Notes	Will not fit 4 speed models.

Brake Caliper Search	Search by make and model
Make	HARLEY DAVIDSON
Model	FLHTCUI ELECTRA GLIDE ULTRA CLASSIC
Beginning Year	1995
Ending Year	2006
Caliper Position	Rear Left
Application Notes	Will not fit 4 speed models.