Product families
Series available: RA, RS.
Shared fitment standard
Rear 21631 sprocket fitment standard
Technical reference for vehicles and public LBG SKU candidates sharing thisrear sprocket mounting pattern.
Geometry
21631
Position
rear
Products
4
Applications
27+
Tooth range
Available teeth: 46, 49.
Chain pitch
428.
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-21631-46-MK1 | RS | 46 | 428 | racing_steel |
| LBG-R-RA-21631-46-MK1 | RA | 46 | 428 | racing_aluminium_7075 |
| LBG-R-RS-21631-49-MK1 | RS | 49 | 428 | racing_steel |
| LBG-R-RA-21631-49-MK1 | RA | 49 | 428 | 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 27 of 27 applications
| Application | Make | Model | Year | Chain pitch | Open |
|---|---|---|---|---|---|
| Gas Gas 85 MC 17/14 2022-2024 | Gas Gas | 85 MC 17/14 | 22-24 | 428 | View fitment |
| Gas Gas 85 MC 19/16 2022-2024 | Gas Gas | 85 MC 19/16 | 22-24 | 428 | View fitment |
| Husqvarna 85 TC (17/14 Wheels) 2015-2017 | Husqvarna | 85 TC (17/14 Wheels) | 15-17 | 428 | View fitment |
| Husqvarna 85 TC (17/14 Wheels) 2018-2021 | Husqvarna | 85 TC (17/14 Wheels) | 18-21 | 428 | View fitment |
| Husqvarna 85 TC (17/14 Wheels) 2022-2023 | Husqvarna | 85 TC (17/14 Wheels) | 22-23 | 428 | View fitment |
| Husqvarna 85 TC (17/14 Wheels) 2024 | Husqvarna | 85 TC (17/14 Wheels) | 24 | 428 | View fitment |
| Husqvarna 85 TC (19/16 Wheels) 2015-2017 | Husqvarna | 85 TC (19/16 Wheels) | 15-17 | 428 | View fitment |
| Husqvarna 85 TC (19/16 Wheels) 2018-2021 | Husqvarna | 85 TC (19/16 Wheels) | 18-21 | 428 | View fitment |
| Husqvarna 85 TC (19/16 Wheels) 2022-2023 | Husqvarna | 85 TC (19/16 Wheels) | 22-23 | 428 | View fitment |
| Husqvarna 85 TC (19/16 Wheels) 2024 | Husqvarna | 85 TC (19/16 Wheels) | 24 | 428 | View fitment |
| KTM 85 SX (LW) 2004-2017 | KTM | 85 SX (LW) | 04-17 | 428 | View fitment |
| KTM 85 SX (LW) 2018 | KTM | 85 SX (LW) | 18 | 428 | View fitment |
| KTM 85 SX (LW) 2019-2020 | KTM | 85 SX (LW) | 19-20 | 428 | View fitment |
| KTM 85 SX (LW) 2021 | KTM | 85 SX (LW) | 21 | 428 | View fitment |
| KTM 85 SX (LW) 2022 | KTM | 85 SX (LW) | 22 | 428 | View fitment |
| KTM 85 SX (LW) 2023 | KTM | 85 SX (LW) | 23 | 428 | View fitment |
| KTM 85 SX (LW) 2024 | KTM | 85 SX (LW) | 24 | 428 | View fitment |
| KTM 85 SX 2004-2017 | KTM | 85 SX | 04-17 | 428 | View fitment |
| KTM 85 SX 2018 | KTM | 85 SX | 18 | 428 | View fitment |
| KTM 85 SX 2019-2020 | KTM | 85 SX | 19-20 | 428 | View fitment |
| KTM 85 SX 2021 | KTM | 85 SX | 21 | 428 | View fitment |
| KTM 85 SX 2022 | KTM | 85 SX | 22 | 428 | View fitment |
| KTM 85 SX 2023 | KTM | 85 SX | 23 | 428 | View fitment |
| KTM 85 SX 2024 | KTM | 85 SX | 24 | 428 | View fitment |
| KTM 85 XC 2008-2009 | KTM | 85 XC | 08-09 | 428 | View fitment |
| KTM 105 SX 2007-2011 | KTM | 105 SX | 07-11 | 428 | View fitment |
| KTM 105 XC 2008-2009 | KTM | 105 XC | 08-09 | 428 | 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.