2Bros Parts

REAR SPROCKET STEEL 37 [JTR1857.37] 520

£14.52

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UK delivery £4.99, free over £60 2–4 business days

Spread the cost with Klarna 18+, T&Cs apply

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REAR SPROCKET STEEL SILVER 37 Teeth 520 JTR1857.37 SR437-37.S.DR. Maximum strength sprockets at minimum weight, made with C45 steel high carbon steel. Each sprocket is heat-treated and finished by hand. Each sprocket is sandblasted to reduce surface tension, satin-silk finish or Power coated Black. Meet or exceed the highest-quality compound mod. standards set by the motorcycle industry.

Specifications
SKU
SR437-37.S.DR
Brand
Dirt Racing
Availability
In Stock (12)

Fitments (51)

MakeModelYear
YAMAHAYFM RAPTOR 2502008
YAMAHAYFM RAPTOR 2502009
YAMAHAYFM RAPTOR 2502010
YAMAHAYFM RAPTOR 2502011
YAMAHAYFM RAPTOR 2502012
YAMAHAYFM RAPTOR 2502013
YAMAHAYFM RAPTOR 3502007
YAMAHAYFM RAPTOR R 7002006
YAMAHAYFM RAPTOR R 7002007
YAMAHAYFM RAPTOR R 7002008
YAMAHAYFM RAPTOR R 7002009
YAMAHAYFM RAPTOR R 7002010
YAMAHAYFM RAPTOR R 7002011
YAMAHAYFM RAPTOR R 7002012
YAMAHAYFM RAPTOR R 7002013
YAMAHAYFM RAPTOR R 7002014
YAMAHAYFM RAPTOR R 7002015
YAMAHAYFM RAPTOR R 7002016
YAMAHAYFM RAPTOR R 7002017
YAMAHAYFM RAPTOR R 7002018
YAMAHAYFM RAPTOR R 7002019
YAMAHAYFM RAPTOR R 7002020
YAMAHAYFM WARRIOR 3501987
YAMAHAYFM WARRIOR 3501988
YAMAHAYFZ 4502004
YAMAHAYFZ 4502005
YAMAHAYFZ 4502006
YAMAHAYFZ 4502007
YAMAHAYFZ 4502008
YAMAHAYFZ 4502009
YAMAHAYFZ 4502010
YAMAHAYFZ 4502011
YAMAHAYFZ 4502012
YAMAHAYFZ 4502013
YAMAHAYFZ BANSHEE 3501987
YAMAHAYFZ BANSHEE 3501988
YAMAHAYFZ BILL BALANCE EDITION 4502007
YAMAHAYFZ R 4502009
YAMAHAYFZ R 4502010
YAMAHAYFZ R 4502011
YAMAHAYFZ R 4502012
YAMAHAYFZ R 4502013
YAMAHAYFZ R 4502014
YAMAHAYFZ R 4502015
YAMAHAYFZ R 4502016
YAMAHAYFZ R 4502017
YAMAHAYFZ R 4502018
YAMAHAYFZ R 4502019
YAMAHAYFZ R 4502020
YAMAHAYFZ SPECIAL EDITION 4502007
YAMAHAYFZ SPECIAL EDITION 4502008
General Product Group
Chain & Sprockets
General Product Type
Sprockets & Components (Rear)
Variant Id
278235
Delivery2–4 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Dirt Racing Steel Rear Sprocket 37 Teeth 520 Pitch

This high-quality rear sprocket from Dirt Racing is designed for maximum strength and minimum weight. Constructed from C45 high carbon steel, it is built to withstand the demands of performance riding.

The sprocket features a 37-tooth count and a 520 chain pitch, making it compatible with a wide range of motorcycle applications. Each sprocket is meticulously heat-treated and finished by hand for exceptional durability and performance.

The surface is sandblasted to reduce surface tension, providing a satin-silk finish. This process enhances the sprocket's longevity and aesthetic appeal. This rear sprocket meets or exceeds the highest quality standards set by the motorcycle industry.

  • Material: C45 High Carbon Steel
  • Teeth Count: 37
  • Chain Pitch: 520
  • Finish: Sandblasted Satin-Silk
  • Construction: Heat-treated and hand-finished
  • Industry Standards: Meets or exceeds highest quality compound mod. standards
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.

Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.

UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

More answers in our FAQ.

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