Vortex Aluminum Rear Sprocket 520 (642A)

Name: Vortex Aluminum Rear Sprocket 520 (642A)
Brand: Vortex
SKU: 642AZK-37
Price: 65.41 USD
Availability: InStock

Part # 642AZK-37

Item #642AZK-37

Fits 7 motorcycles

Yamaha
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Vortex Aluminum Rear Sprocket 520 (642A)

Vortex Aluminum Rear Sprocket 520 — Black (642AZK)

Product Details

Vortex aluminum rear sprockets are 100% CNC-machined performance replacements that reduce rotating mass compared to stock steel, available in 420 and 525 chain pitches in black and silver anodized finishes. A unique tooth profile and weight-saving cutouts make them a straightforward drivetrain upgrade for street and track riders.

100% CNC-machined aluminum for improved concentricity over cast or stamped alternatives
Lightweight construction reduces rotating mass compared to OEM steel sprockets, supporting faster acceleration response
Unique tooth design extends sprocket service life
Weight-saving cutouts further reduce rotating weight
Anodized finish in black and silver; covers 420 and 525 chain pitches

Spec: Position: Rear · Teeth: 41 · Material: Aluminum · Finish: Black · Chain Pitch: 520

Fitment

Yamaha MT 09 2021–2026
Yamaha MT 09 SP 2021–2026
Yamaha FJ 09 2021–2026
Yamaha XSR900 2022–2026
Yamaha YZF R1 2015–2026
Yamaha YZF R1M 2015–2026
Yamaha YZF R6 1999–2002

Specifications

Position	Rear
Chain Pitch	520
Teeth	41
Material	Aluminum
Finish	Black
Best For	Street, Track

Verified from Garamoto’s catalog & fitment data.