Sprocket fitment authority

Yamaha YZ125 A/B/C USA 1974-1975 sprocket fitment

Public LBG sprocket candidates for 428 chain, front 15T and rear 47T guidance. Final compatibility is verified before production or purchase.

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Verified application data

Make: Yamaha
CC: 125
Model: YZ125 A/B/C USA
Year: 74-75
Front teeth: 15
Rear teeth: 47
Chain pitch: 428
Chain length: 112
Model type: Core

Fitment verification notice: final sprocket compatibility must be verified before production or purchase, including chain pitch, tooth count, clearance, application year, and front/rear geometry.

Internal links

Back to Finder Products / Sprockets OEM Code Cross-Reference Request Fitment

Front sprocket candidate

Langbiang Gravity RS Racing Steel Front Sprocket 15T

LBG-F-RS-17926-15-MK1 / 15T / 428 chain

Rear RS Racing Steel

Verification required

- / 47T / endurance, mud, torque, and long service life.

Rear RA Racing Aluminium

Verification required

- / 47T / 7075-T6 race-day response and reduced rotating mass.

Langbiang Gravity candidate products

Public LBG SKU candidates support rider service, dealer quoting, cross-reference review, and export-ready Vietnam supply planning.

Request	LBG SKU	Public name	Position	Series	Series name	Teeth	Material class	Mark	Status
Request this sprocket	LBG-F-RS-17926-15-MK1	Langbiang Gravity RS Racing Steel Front Sprocket 15T	front	RS	Racing Steel	15	racing_steel	MK1	auto_candidate

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Year: 1974-1975 / model type: Core / chain length: 112