RENTHAL
Renthal Ultralight Rear Sprocket (51T, Silver) 224U-520-51GPSI - KTM / Husqvarna / Gas Gas / Triumph 125cc-990cc 1990-2026
Renthal Ultralight Rear Sprocket (51T, Silver) 224U-520-51GPSI - KTM / Husqvarna / Gas Gas / Triumph 125cc-990cc 1990-2026
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Renthal Ultralight Rear Sprocket (51T, Silver) 224U-520-51GPSI - KTM / Husqvarna / Gas Gas / Triumph 125cc-990cc 1990-2026
Product Description
The Renthal Ultralight Rear Sprocket is precision-machined to maximize power transfer and minimize unsprung weight for your off-road or dual-sport machine. Built to championship standards, it delivers maximum durability and efficiency on the track or trail.
Constructed from specially enhanced high-strength 7075-T6 aluminum, this sprocket provides exceptional strength while remaining significantly lighter than steel alternatives. Its specialized tooth profile ensures smooth chain rolling action, reducing friction and extending component lifespan.
Top Features: Renthal Ultralight Rear Sprocket
- CNC-machined with a computer-aided ultra-light design to cut unsprung weight and enhance power transfer
- Forged from high-strength, specially enhanced 7075-T6 aluminum that is 33% lighter than steel without sacrificing strength
- Advanced tooth profile allows the chain to roll easily on and off for reduced noise and longer wear
- Engineered to strict factory tolerances for a precise drivetrain fit
Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.
Fitment List
| Year Range | Vehicle Brand | Vehicle Model & Sub-Model |
|---|---|---|
| 1990-1993 | KTM | 600 MX / 600 LC4 |
| 1991-2011 | KTM | 125 EXC |
| 1991-2017 | KTM | 125 EXC |
| 1991-2026 | KTM | 250 SX |
| 1992-1996 | KTM | 550 DXC |
| 1993-1996 | KTM | 550 MXC |
| 1994-1995 | KTM | 440 EXC |
| 1994-2004 | KTM | 250 XC-W |
| 1994-2011 | KTM | 250 EXC |
| 1994-2013 | KTM | 250 XC |
| 1994-2015 | KTM | 250 XC |
| 1994-2018 | KTM | 250 XC-W |
| 1994-2019 | KTM | 250 XC |
| 1994-2023 | KTM | 250 XC-W |
| 1994-2024 | KTM | 250 EXC |
| 1994-2025 | KTM | 250 XC |
| 1994-2026 | KTM | 250 XC-W |
| 1995-2008 | KTM | 300 EXC |
| 1995-2016 | KTM | 300 XC |
| 1995-2017 | KTM | 300 EXC |
| 1995-2018 | KTM | 300 XC |
| 1995-2021 | KTM | 300 XC-W |
| 1995-2023 | KTM | 300 XC |
| 1995-2026 | KTM | 300 XC / 300 XC-W |
| 1996-1997 | KTM | 360 SX |
| 1997-1998 | KTM | 620 LC4 |
| 1997-1999 | KTM | 620 Duke |
| 1997-2000 | KTM | 400 LC4 |
| 1998-1999 | KTM | 200 XC |
| 1998-2002 | KTM | 380 EXC / 520 EXC / 520 SX |
| 1998-2006 | KTM | 200 EXC |
| 1998-2011 | KTM | 200 EXC / 250 EXC Racing 4-Stroke |
| 1998-2015 | KTM | 250 EXC Racing 4-Stroke |
| 1998-2016 | KTM | 200 EXC |
| 1999 | KTM | 520 SX Racing 4-Stroke |
| 1999-2000 | KTM | 400 LC4-E |
| 1999-2002 | KTM | 400 SX / 400 SX Racing 4-Stroke |
| 1999-2003 | KTM | 640 LC4 Supermoto |
| 1999-2005 | KTM | 640 LC4 Supermoto |
| 1999-2006 | KTM | 640 Adventure R |
| 2000-2002 | KTM | 380 EXC / 520 EXC Racing 4-Stroke |
| 2000-2006 | KTM | 640 Duke / 640 LC4 E |
| 2000-2008 | KTM | 400 EXC / 400 EXC Racing 4-Stroke |
| 2000-2010 | KTM | 400 XC-W |
| 2002-2003 | KTM | 660 LC4 Rally Factory Replica |
| 2002-2011 | KTM | 250 EXC-F |
| 2002-2014 | KTM | 250 EXC-F |
| 2002-2016 | KTM | 250 EXC-F |
| 2002-2019 | KTM | 250 EXC-F |
| 2002-2021 | KTM | 250 EXC-F / 250 XC-F |
| 2002-2022 | KTM | 250 EXC-F |
| 2002-2025 | KTM | 250 XC-F |
| 2003 | KTM | 660 LC4 Rally Factory Replica |
| 2003-2005 | KTM | 250 EXC 4-Stroke / 625 SXC Adventure |
| 2003-2006 | KTM | 200 SX / 525 SX / 620 SXC / 625 SXC / 660 SMC |
| 2003-2007 | KTM | 525 EXC |
| 2003-2008 | Husaberg | FS650E |
| 2003-2012 | KTM | 450 EXC / 450 EXC Racing 4-Stroke |
| 2003-2014 | KTM | 450 XC-W |
| 2003-2026 | KTM | 125 SX / 450 SX-F |
| 2004 | KTM | 660 Rally Factory Replica |
| 2005 | Husaberg | FC550 |
| 2006 | Husaberg | FC 550 |
| 2006-2007 | Husaberg | FE 550 / FE650E / FE450E / FS450E / FS650C |
| 2006-2008 | Husaberg | FC 550 |
| 2006-2014 | KTM | 450 SMR |
| 2006-2022 | KTM | 450 SMR |
| 2006-2026 | KTM | 250 SX-F / 450 SMR |
| 2007-2008 | KTM | 690 Supermoto |
| 2008 | KTM | 144 SX |
| 2008-2009 | KTM | 505 SX-F / 505 XC-F / 525 EXC Racing 4-Stroke |
| 2008-2010 | KTM | 690 SMC |
| 2008-2011 | KTM | 144 SX / 530 EXC / 690 Duke R |
| 2008-2013 | KTM | 450 EXC-R |
| 2008-2017 | KTM | 690 Duke R |
| 2008-2019 | KTM | 690 Duke |
| 2009 | KTM | 530 XC-W |
| 2009-2011 | Husaberg | FE 450 E / FE570 |
| 2009-2012 | Husaberg | FE570 |
| 2009-2013 | Husaberg | FE 450 E |
| 2009-2013 | KTM | 250 XCF-W / 250 XCF-W 4-Stroke |
| 2009-2022 | KTM | 150 SX |
| 2009-2025 | KTM | 150 SX / 450 XC-F |
| 2009-2026 | KTM | 450 XC-F |
| 2010 | Husaberg | FE390 / FX450 / FS570 |
| 2010-2011 | Husaberg | FE390 / FX450 / FS570 |
| 2010-2012 | Husaberg | FE390 / FX450 |
| 2010-2014 | KTM | 150 XC |
| 2010-2020 | KTM | 690 Enduro R |
| 2010-2023 | KTM | 690 Enduro R |
| 2010-2026 | KTM | 350 SX-F / 690 Enduro R |
| 2011 | KTM | 350 XC-F |
| 2011-2025 | KTM | 350 XC-F |
| 2012 | Husaberg | TE250 / TE300 |
| 2012-2013 | Husaberg | TE250 / TE300 / KTM 500 XC-W |
| 2012-2014 | Husaberg | TE250 / TE300 |
| 2012-2015 | KTM | 500 EXC |
| 2012-2016 | KTM | 350 XCF-W |
| 2012-2022 | KTM | 350 XCF-W |
| 2012-2026 | KTM | 350 EXC-F |
| 2013 | Husaberg | FE250 / TE125 / FE501 / FE350 |
| 2013-2014 | Husaberg | FE250 / TE125 / FE501 / FE350 |
| 2013-2017 | KTM | 690 SMC-R |
| 2013-2024 | KTM | 690 SMC-R |
| 2013-2026 | KTM | 690 SMC-R |
| 2014 | Husqvarna | FE 350 S / FE 501 S |
| 2014-2015 | Husqvarna | TE125 |
| 2014-2016 | Husqvarna | TE125 |
| 2014-2018 | Husqvarna | FE 250 / TE 250 |
| 2014-2020 | Husqvarna | TE 300 |
| 2014-2022 | Husqvarna | FE350 / FE501 |
| 2014-2025 | Husqvarna | FC250 / FC350 / FC450 / KTM 500 EXC-F |
| 2014-2026 | Husqvarna | TC125 / TC250 / FE 450 / FE 300 / FE 250 |
| 2015 | Husaberg | FE 501 |
| 2015-2016 | Husqvarna | FE501S |
| 2015-2018 | KTM | 450 EXC-F |
| 2015-2020 | KTM | 450 EXC-F |
| 2015-2024 | KTM | 450 EXC-F |
| 2015-2025 | Husqvarna | FE350S |
| 2015-2026 | Husqvarna | FE350S / FE501S |
| 2017 | KTM | 125 EXC Six Days |
| 2017-2018 | Husqvarna | TX 125 / FX350 |
| 2017-2018 | KTM | 250 EXC Six Days / 350 EXC-F Six Days |
| 2017-2019 | Husqvarna | TX 300 / TE 150 |
| 2017-2019 | KTM | 125 XC-W / 150 XC-W |
| 2017-2020 | KTM | 250 EXC-F Six Days |
| 2017-2021 | Husqvarna | 701 Enduro |
| 2017-2024 | Husqvarna | FX450 / 701 Supermoto / 701 Enduro |
| 2017-2025 | Husqvarna | FX350 |
| 2017-2026 | KTM | 150 XC-W / Husqvarna TE 150 |
| 2018 | KTM | 300 EXC TPI Six Days / 300 XC-W Six Days |
| 2018-2022 | KTM | 250 EXC TPI / 300 EXC TPI / 500 EXC-F Six Days |
| 2018-2023 | Husqvarna | TE 250i / TE 300i |
| 2018-2024 | Husqvarna | FS450 |
| 2019-2020 | KTM | 790 Duke |
| 2019-2022 | KTM | 250 XC-W TPI / 300 XC-W TPI |
| 2019-2023 | KTM | 790 Duke |
| 2020 | Husqvarna | FR 450 Rally / 701 Enduro LR |
| 2020-2021 | KTM | 790 Adventure |
| 2020-2022 | KTM | 150 EXC TPI / 300 XC TPI / 500 XCF-W |
| 2020-2023 | Husqvarna | TE 150i / TX300i / KTM 890 Duke R |
| 2020-2026 | KTM | 690 Enduro R |
| 2021 | KTM | 450 Rally Replica / 890 Adventure |
| 2021-2022 | KTM | 790 Adventure R / 150 XC-W TPI / 250 XC TPI / 890 Duke |
| 2021-2024 | Gas Gas | EX 450F |
| 2021-2025 | Gas Gas | EX 250F / EX 350F / KTM 125 XC |
| 2021-2026 | Gas Gas | EX 300 / MC 450F / EC 300 / MC 250F / MC 125 / KTM 890 Adventure R |
| 2022 | Husqvarna | Enduro 701 |
| 2022-2024 | Gas Gas | EC 250F / EC 350F |
| 2022-2025 | Gas Gas | MC 250 / EX 250 / MC 350F / EC 250 / Husqvarna Norden 901 |
| 2023 | KTM | 450 Rally Replica / 890 Adventure |
| 2023-2024 | Gas Gas | ES 700 / SM 700 |
| 2023-2025 | Husqvarna | Norden 901 Expedition |
| 2023-2026 | KTM | 300 SX / 450 XCF-W |
| 2024 | KTM | 300 XC-W Hardenduro / 890 Adventure R Rally / 500 EXC-F Six Days |
| 2024-2025 | Gas Gas | ES 500 / EC 450F / ES 350 / Husqvarna TE300 Pro / Svartpilen 801 |
| 2025 | Gas Gas | MC 300 / MC 150 / EC 125 / EC 300 GP / Triumph TF 450-E / TF 450-RC Edition / TF 250-E / CFMOTO Ibex 800 E |
| 2025 | Husqvarna | FE350S Heritage / FC450 Factory Edition / FE501S Heritage / TC125 Heritage / TC150 / Vitpilen 801 / FE450 Heritage / TC300 Heritage / TE300 Heritage / FS 450 / FX350 Heritage / FC250 Factory Edition / TC150 Heritage / TC300 / TX300 Heritage |
| 2026 | KTM | 990 Duke / 990 Duke R / 990 RC R |
Frequently Asked Questions
Q: What chain size is this rear sprocket engineered for?
A: This sprocket is designed to fit a 520 chain size setup.
Q: What material is used to construct this rear sprocket?
A: It is precision-machined from high-strength 7075-T6 aluminum.
Expert Pro-Tip: Always inspect your front sprocket and chain condition when replacing your rear sprocket. Installing a new aluminum sprocket onto a heavily worn, stretched chain will cause premature tooth wear and ruin the components rapidly.
Recommended Pairings:
About Moto-House MX
At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.
Moto-House MX - Choice of Champions - Your premier powersports source with great customer service and lightning-fast shipping straight to your door.
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