Product families
Series available: RA, RS.
Shared fitment standard
Rear 21481 sprocket fitment standard
Technical reference for vehicles and public LBG SKU candidates sharing thisrear sprocket mounting pattern.
Geometry
21481
Position
rear
Products
8
Applications
60+
Tooth range
Available teeth: 48, 49, 50, 51.
Chain pitch
520.
Fitment notice
This is a technical reference, not a final fitment guarantee.
LBG SKU candidates for this standard
Product options are public Langbiang Gravity SKUs for fitment planning.
| LBG SKU | Series | Teeth | Chain | Material |
|---|---|---|---|---|
| LBG-R-RS-21481-48-MK1 | RS | 48 | 520 | racing_steel |
| LBG-R-RA-21481-48-MK1 | RA | 48 | 520 | racing_aluminium_7075 |
| LBG-R-RS-21481-49-MK1 | RS | 49 | 520 | racing_steel |
| LBG-R-RA-21481-49-MK1 | RA | 49 | 520 | racing_aluminium_7075 |
| LBG-R-RS-21481-50-MK1 | RS | 50 | 520 | racing_steel |
| LBG-R-RA-21481-50-MK1 | RA | 50 | 520 | racing_aluminium_7075 |
| LBG-R-RS-21481-51-MK1 | RS | 51 | 520 | racing_steel |
| LBG-R-RA-21481-51-MK1 | RA | 51 | 520 | racing_aluminium_7075 |
Part-number references
These references create deeper search paths into the same fitment standard.
Vehicle applications using this standard
This list is for research and comparison. Verify exact model-year fitment before production or purchase.
Showing 60 of 60 applications
| Application | Make | Model | Year | Chain pitch | Open |
|---|---|---|---|---|---|
| Yamaha YZ125 L,M,N 1999-2001 | Yamaha | YZ125 L,M,N | 99-01 | 520 | View fitment |
| Yamaha YZ125 L2,M2 2020-2021 | Yamaha | YZ125 L2,M2 | 20-21 | 520 | View fitment |
| Yamaha YZ125 N2L 2022 | Yamaha | YZ125 N2L | 22 | 520 | View fitment |
| Yamaha YZ125 P,R,S 5XE2 2002-2004 | Yamaha | YZ125 P,R,S 5XE2 | 02-04 | 520 | View fitment |
| Yamaha YZ125 P2L 2023 | Yamaha | YZ125 P2L | 23 | 520 | View fitment |
| Yamaha YZ125 RL 2024 | Yamaha | YZ125 RL | 24 | 520 | View fitment |
| Yamaha YZ125 RSE 50th Anniversary Ed. 2024 | Yamaha | YZ125 RSE 50th Anniversary Ed. | 24 | 520 | View fitment |
| Yamaha YZ125 T,V,W,X,Y,Z,A1,B,D2,E2,F2,G2,H2,J2,K2 2005-2019 | Yamaha | YZ125 T,V,W,X,Y,Z,A1,B,D2,E2,F2,G2,H2,J2,K2 | 05-19 | 520 | View fitment |
| Yamaha YZ125 X-L,M 2020-2021 | Yamaha | YZ125 X-L,M | 20-21 | 520 | View fitment |
| Yamaha YZ125 X-L,N,P 2022-2023 | Yamaha | YZ125 X-L,N,P | 22-23 | 520 | View fitment |
| Yamaha YZ125 X-R 2024 | Yamaha | YZ125 X-R | 24 | 520 | View fitment |
| Yamaha YZ250 F-B,D,E,F,G,H,K,L,M 2012-2021 | Yamaha | YZ250 F-B,D,E,F,G,H,K,L,M | 12-21 | 520 | View fitment |
| Yamaha YZ250 F-E,F,G,H,J,K,L,M 2014-2021 | Yamaha | YZ250 F-E,F,G,H,J,K,L,M | 14-21 | 520 | View fitment |
| Yamaha YZ250 F-G 60th Anniversary Edition 2016 | Yamaha | YZ250 F-G 60th Anniversary Edition | 16 | 520 | View fitment |
| Yamaha YZ250 F-N,P (4-Stroke) 2022-2023 | Yamaha | YZ250 F-N,P (4-Stroke) | 22-23 | 520 | View fitment |
| Yamaha YZ250 F-N,P,R,S (4-Stroke) 2001-2004 | Yamaha | YZ250 F-N,P,R,S (4-Stroke) | 01-04 | 520 | View fitment |
| Yamaha YZ250 F-NL,P2L,RL USA 2022-2024 | Yamaha | YZ250 F-NL,P2L,RL USA | 22-24 | 520 | View fitment |
| Yamaha YZ250 F-R 2024 | Yamaha | YZ250 F-R | 24 | 520 | View fitment |
| Yamaha YZ250 F-RSE 50th Anniversary Edition 2024 | Yamaha | YZ250 F-RSE 50th Anniversary Edition | 24 | 520 | View fitment |
| Yamaha YZ250 F-T,V,W,X,Y (4-Stroke) 2005-2009 | Yamaha | YZ250 F-T,V,W,X,Y (4-Stroke) | 05-09 | 520 | View fitment |
| Yamaha YZ250 F-Z,A 17D5 USA 2011 | Yamaha | YZ250 F-Z,A 17D5 USA | 11 | 520 | View fitment |
| Yamaha YZ250 F-Z,A,B,D 17D6/7/8 2010-2013 | Yamaha | YZ250 F-Z,A,B,D 17D6/7/8 | 10-13 | 520 | View fitment |
| Yamaha YZ250 FMME Monster 2021 | Yamaha | YZ250 FMME Monster | 21 | 520 | View fitment |
| Yamaha YZ250 FNME Monster 2022 | Yamaha | YZ250 FNME Monster | 22 | 520 | View fitment |
| Yamaha YZ250 FX-F,G,H,J,K,L1,M 2015-2021 | Yamaha | YZ250 FX-F,G,H,J,K,L1,M | 15-21 | 520 | View fitment |
| Yamaha YZ250 FX-N,P USA 2022-2023 | Yamaha | YZ250 FX-N,P USA | 22-23 | 520 | View fitment |
| Yamaha YZ250 FX-R 2024 | Yamaha | YZ250 FX-R | 24 | 520 | View fitment |
| Yamaha YZ250 L,M,N 1999-2001 | Yamaha | YZ250 L,M,N | 99-01 | 520 | View fitment |
| Yamaha YZ250 L2,M2 2020-2021 | Yamaha | YZ250 L2,M2 | 20-21 | 520 | View fitment |
| Yamaha YZ250 N2 2022 | Yamaha | YZ250 N2 | 22 | 520 | View fitment |
| Yamaha YZ250 N2ME Monster 2022 | Yamaha | YZ250 N2ME Monster | 22 | 520 | View fitment |
| Yamaha YZ250 P,R,S 2002-2004 | Yamaha | YZ250 P,R,S | 02-04 | 520 | View fitment |
| Yamaha YZ250 P2 2023 | Yamaha | YZ250 P2 | 23 | 520 | View fitment |
| Yamaha YZ250 R 2024 | Yamaha | YZ250 R | 24 | 520 | View fitment |
| Yamaha YZ250 R,S USA 2003-2004 | Yamaha | YZ250 R,S USA | 03-04 | 520 | View fitment |
| Yamaha YZ250 RSE 50th Anniversary Edition 2024 | Yamaha | YZ250 RSE 50th Anniversary Edition | 24 | 520 | View fitment |
| Yamaha YZ250 T,V,W,X,Y,Z,A1,B1,D2,E2,F2,G2,H2,J2,K2 2005-2019 | Yamaha | YZ250 T,V,W,X,Y,Z,A1,B1,D2,E2,F2,G2,H2,J2,K2 | 05-19 | 520 | View fitment |
| Yamaha YZ250 X-G,H,J,K,L,M USA 2016-2021 | Yamaha | YZ250 X-G,H,J,K,L,M USA | 16-21 | 520 | View fitment |
| Yamaha YZ250 X-N,P 2022-2023 | Yamaha | YZ250 X-N,P | 22-23 | 520 | View fitment |
| Yamaha YZ250 X-R 2024 | Yamaha | YZ250 X-R | 24 | 520 | View fitment |
| Yamaha YZ400 F-L 1999 | Yamaha | YZ400 F-L | 99 | 520 | View fitment |
| Yamaha YZ426 F-M,N,P 2000-2002 | Yamaha | YZ426 F-M,N,P | 00-02 | 520 | View fitment |
| Yamaha YZ450 33D F-W,X,Y,Z,A,B,D,E 2007-2014 | Yamaha | YZ450 33D F-W,X,Y,Z,A,B,D,E | 07-14 | 520 | View fitment |
| Yamaha YZ450 F-B,D 2012-2013 | Yamaha | YZ450 F-B,D | 12-13 | 520 | View fitment |
| Yamaha YZ450 F-E USA 2014 | Yamaha | YZ450 F-E USA | 14 | 520 | View fitment |
| Yamaha YZ450 F-F,G,H,J 2015-2018 | Yamaha | YZ450 F-F,G,H,J | 15-18 | 520 | View fitment |
| Yamaha YZ450 F-F,G,H,J,K 2015-2019 | Yamaha | YZ450 F-F,G,H,J,K | 15-19 | 520 | View fitment |
| Yamaha YZ450 F-G 60h Anniversary Edition 2016 | Yamaha | YZ450 F-G 60h Anniversary Edition | 16 | 520 | View fitment |
| Yamaha YZ450 F-K,L,M USA 2019-2021 | Yamaha | YZ450 F-K,L,M USA | 19-21 | 520 | View fitment |
| Yamaha YZ450 F-L,M 2020-2021 | Yamaha | YZ450 F-L,M | 20-21 | 520 | View fitment |
| Yamaha YZ450 F-MME Monster 2021 | Yamaha | YZ450 F-MME Monster | 21 | 520 | View fitment |
| Yamaha YZ450 F-N 2022 | Yamaha | YZ450 F-N | 22 | 520 | View fitment |
| Yamaha YZ450 F-NL,P2L,RL 2022-2024 | Yamaha | YZ450 F-NL,P2L,RL | 22-24 | 520 | View fitment |
| Yamaha YZ450 F-NME Monster 2022 | Yamaha | YZ450 F-NME Monster | 22 | 520 | View fitment |
| Yamaha YZ450 F-P 2023 | Yamaha | YZ450 F-P | 23 | 520 | View fitment |
| Yamaha YZ450 F-PME Monster 2023 | Yamaha | YZ450 F-PME Monster | 23 | 520 | View fitment |
| Yamaha YZ450 F-R 2024 | Yamaha | YZ450 F-R | 24 | 520 | View fitment |
| Yamaha YZ450 F-R,S 5XD2 2003-2004 | Yamaha | YZ450 F-R,S 5XD2 | 03-04 | 520 | View fitment |
| Yamaha YZ450 F-RSE 50th Anniversary Ed. 2024 | Yamaha | YZ450 F-RSE 50th Anniversary Ed. | 24 | 520 | View fitment |
| Yamaha YZ450 F-T,V 2005-2006 | Yamaha | YZ450 F-T,V | 05-06 | 520 | View fitment |
Research workflow
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.