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Sprocket JT. Aluminium Ultra-Light 251 - 520

JT. Aluminium Ultra-Light 251 - 520 Sprocket Ref : JTC00512A / 1096568002

JT. Aluminium Ultra-Light 251 - 520 Sprocket

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JT. Aluminium Ultra-Light 251 - 520 SprocketRef : JTC00512A / 1096568002

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Description
Compatible motorbikes
Questions and answers

DescriptionJT. Aluminium Ultra-Light 251 - 520 Sprocket

Product details :

Features

JT Sprockets Ultra-Light Aluminum Sprocket 251 - 520 (Manufacturer Part No: JTA251.49BLK)

Replace your sprocket with a piece designed for both the road and trails. This JT Sprockets sprocket adheres to the manufacturer's standards: made from aerospace-grade aluminum 7075-T6 (Ergal) to combine strength and low inertia, featuring a sleek black finish and a design focused on mechanical performance and transmission handling.

Material: Aluminum 7075-T6 (Ergal)
Color: Black
Number of Teeth: 49 teeth
Chain Pitch: 520
Type: Standard (sprocket)
Finish: Mud-resistant treatment on the teeth to limit the accumulation of mud and dirt

Compact and lightweight, it easily integrates into the transmission to adjust the gearing according to your use—whether for motocross or roadster. Suitable for models such as YAMAHA YZ 450 F (2026), FANTIC XX 125 (2022), or GAS GAS EC 300 F (2015). Installation with original fittings is recommended; check compatibility and chain tension adjustment before resuming your ride.

Technical information :

Reference

JTC00512A / 1096568002

Rear sprocket type

251

No transmission chain

520

Number of teeth (crown)

Type of crown

Ultra-light

Number of teeth

49 teeth

Color

Black

Compatible motorbikes

YAMAHA69 compatible models

YZ 125 (CE13) - 2004/2004YZ 125 (CE03) - 1999/1999WR 125 Z - 1999/2003YZ 125 (CE10) - 2003/2003YZ 125 (CE08) - 2001/2001TT-R 125 LW BIG WHEELS E (CE21) - 2021/2021YZ 125 (CE16) - 2006/2023YZ 125 (CE15) - 2005/2005YZ 125 (CE09) - 2002/2002YZ 125 (CE05) - 2000/2000YZ 125 - 2024/2026TT-R 230 - 2005/2006WR 250 F (CG16) - 2003/2004WR 250 F (CG11) - 2001/2002WR 250 F (CG22) - 2005/2005WR 250 F (CG26) - 2007/2007WR 250 F (CG36) - 2015/2015WR 250 F (CG24) - 2006/2006YZ 250 F (CG21) - 2005/2005WR 250 X (DG20) - 2008/2014YZ 250 F (CG40) - 2019/2021YZ 250 F (CG10) - 2001/2002YZ 250 F (CG14) - 2003/2003YZ 250 F (CG18) - 2004/2004YZ 250 F (CG25) - 2006/2006YZ 250 F (CG27) - 2007/2009WR 250 F (CG30) - 2008/2014WR 250 R (DG20) - 2008/2016YZ 250 F (CG34) - 2014/2016YZ 250 (CG20) - 2005/2005YZ 250 (CG23) - 2006/2023YZ 250 - 2024/2026YZ 250 F - 2022/2026YZ 250 FX - 2015/2024YZ 250 F (CG39) - 2017/2018YZ 250 (CG08) - 2000/2001YZ 250 (CG12) - 2002/2002YZ 250 (CG05) - 1999/1999YZ 250 (CG17) - 2004/2004YZ 250 (CG13) - 2003/2003YZ 250 F (CG33) - 2010/2013WR 250 F - 2020/2022WR 250 F ENDURO GP (RE25) - 2018/2018WR 250 F (RE25) - 2016/2019YZ 250 X - 2016/2020YZ 400 F (CH03) - 1999/1999WR 400 F (CH04) - 1999/2000YZ 426 F (CJ01) - 2000/2002WR 426 F (CJ02) - 2001/2002WR 450 F ENDURO GP (RE45) - 2018/2018WR 450 F (CJ04) - 2003/2004WR 450 F (CJ07) - 2005/2005WR 450 F (CJ09) - 2006/2006WR 450 F (CJ12) - 2007/2007WR 450 F (CJ13) - 2008/2011YZ 450 FX - 2016/2024YZ 450 F (CJ15) - 2010/2013YZ 450 F (CJ18) - 2014/2015YZ 450 F (CJ06) - 2005/2005YZ 450 F (CJ05) - 2004/2004YZ 450 F (CJ03) - 2003/2003YZ 450 F (CJ22) - 2018/2018YZ 450 F (CJ23) - 2019/2021YZ 450 F (CJ21) - 2016/2017YZ 450 F - 2022/2026YZ 450 F (CJ10) - 2006/2009WR 450 F (DJ03) - 2012/2015WR 450 F - 2016/2017 - 2021/2023WR 450 F (RE45) - 2018/2020

GAS-GAS4 compatible models

EC 250 F SIX DAYS - 2012/2012EC 250 F REPLICA CAMI - 2014/2014EC 250 F - 2010/2015EC 300 F - 2013/2015

HONDA3 compatible models

FX 650 VIGOR (RD09) - 2000/2000NX 650 DOMINATOR (RD02) - 1988/1990SLR 650 (RD09) - 1997/1998

FANTIC2 compatible models

XX 125 - 2021/2022XE 125 - 2021/2022

RIEJU1 compatible model

MARATHON 250 - 2010/2012