Front 13904 is a shared sprocket fitment reference used to group public LBG SKU candidates and related vehicle applications.

Can this standard confirm final fitment by itself?

No. Final fitment still requires verification of chain pitch, tooth count, clearance, model year, and production requirement.

Shared fitment standard

Front 13904 sprocket fitment standard

Technical reference for vehicles and public LBG SKU candidates sharing thisfront sprocket mounting pattern.

Geometry

13904

Position

front

Products

Applications

Series available: RS.

Available teeth: 12, 13.

520.

This is a technical reference, not a final fitment guarantee.

Product options are public Langbiang Gravity SKUs for fitment planning.

LBG SKU	Series	Teeth	Chain	Material
LBG-F-RS-13904-12-MK1	RS	12	520	racing_steel
LBG-F-RS-13904-13-MK1	RS	13	520	racing_steel

These references create deeper search paths into the same fitment standard.

No part-number references are mapped to this standard yet.

This list is for research and comparison. Verify exact model-year fitment before production or purchase.

Filter by makeFilter by modelFilter by year

Showing 7 of 7 applications

Application	Make	Model	Year	Chain pitch	Open
Kawasaki KX125 K1-K2 1994-1995	Kawasaki	KX125 K1-K2	94-95	520	View fitment
Kawasaki KX125 K3-K4 1996-1997	Kawasaki	KX125 K3-K4	96-97	520	View fitment
Kawasaki KX125 K5 1998	Kawasaki	KX125 K5	98	520	View fitment
Kawasaki KX125 L1 1999	Kawasaki	KX125 L1	99	520	View fitment
Kawasaki KX125 L2-L4 2000-2002	Kawasaki	KX125 L2-L4	00-02	520	View fitment
Kawasaki KX125 M1 2003	Kawasaki	KX125 M1	03	520	View fitment
Kawasaki KX125 M2,M3,M6F,M7F,M8F 2004-2008	Kawasaki	KX125 M2,M3,M6F,M7F,M8F	04-08	520	View fitment

Start with a part number, then follow the shared fitment standard to understand related applications.

Compare series, tooth counts, and chain pitch before narrowing down a public LBG SKU candidate.

Use the bike fitment page for model-year context before requesting final verification.