Name: REAR SPROCKET ALLOY BLACK 251, JTA251.52BLK 7075-T6 Aluminium, SR251-52
Brand: JT
SKU: SR245-52.JT.A_BK

REAR SPROCKET ALLOY BLACK 251, JTA251.52BLK 7075-T6 Aluminium, SR251-52

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Description

CNC-machined from certified 7075-T6 Ergal, RaceLite rear sprockets pair ultra-low weight with race-ready strength. Engineered for extreme conditions, they cut rotating mass for quicker acceleration while maintaining exceptional wear resistance.

Features

7075-T6 Ergal aviation-grade aluminium construction
Precision CNC machining to tight JT tolerances
Ultra-low rotating mass for quicker acceleration
Designed for extreme pro-race conditions
High strength-to-weight ratio with excellent durability
Clean, consistent tooth profile for smooth chain engagement

Specifications

Material: 7075-T6 Ergal Aluminium
Tooth count: 52
Drive chain pitch: 520
Colour: Black

Vehicle Fitment

Honda (Road)

XR250 Tornado

Yamaha (Off Road)

YZ125 (1999-2026)
YZ125 50th Anniversary Ed. (2024)
YZ125 70th Anniversary Ed. (2026)
YZ125 Monster Energy Ed (2025)
YZ125 X (2020-2026)
TT-R230 (2005-2026)
WR250 F (1999-2000)
WR250 F (Enduro Version) (2001)
WR250 F (Off Road Version) (2001-2026)
YZ250 (1999-2026)
YZ250 50th Anniversary Edition (2024; 2026)
YZ250 F (4-Stroke) (2001-2026)
YZ250 F 50th Anniversary Edition (2024)
YZ250 F 60th Anniversary Edition (2016)
YZ250 F 70th Anniversary Edition (4-Stroke) (2026)
YZ250 F Monster (2021-2023; 2025)
YZ250 FX (2015-2026)
YZ250 Monster (2022)
YZ250 X (2016-2026)
WR400 F (1999-2001)
YZ400 F (1999)
WR426 F (2001-2002)
YZ426 F (2000-2002)
WR450 F (2003-2026)
YZ450 F (2003-2026)
YZ450 F 50th Anniversary Ed. (2024)
YZ450 F 60h Anniversary Edition (2016)
YZ450 F 70th Anniversary Ed. (2026)
YZ450 F Monster (2021-2023; 2025)
YZ450 FX (2016-2026)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ F 426	2000-2002
YAMAHA	YZ F 400	1999
YAMAHA	YZ F 450	2003-2004
YAMAHA	YZ F 450	2005
YAMAHA	YZ 125	2005-2020
YAMAHA	YZ 250	1999-2019
YAMAHA	YZ 125	1999-2019
YAMAHA	YZ F 250	2001-2019
YAMAHA	YZ F 450	2003-2019
YAMAHA	WR F 450	2003-2019
YAMAHA	YZ F 450	2006-2009
YAMAHA	WR F 450	2003-2016
YAMAHA	WR F 250	2001-2019
YAMAHA	YZ F 450	2010-2019
YAMAHA	YZ 125	1999-2004
HONDA	XL 250	1982-1987
HONDA	XR 250	1979-1983
YAMAHA	YZ 426	2000-2002
YAMAHA	YZ F 450	2017-2019
YAMAHA	YZ 250	1977-2019
YAMAHA	YZ 400	1977-2002
YAMAHA	WR F 400	1999-2002
YAMAHA	WR F 426	1999-2002
YAMAHA	WR 250	2000-2006
YAMAHA	WR F 250	2001-2007
YAMAHA	WR F 250	2008-2019
HONDA	XR R 600	1983-1990
HONDA	XL 500	1979-1984
HONDA	XL 600	1984-1994

REAR SPROCKET ALLOY BLACK 251, JTA251.52BLK 7075-T6 Aluminium, SR251-52

JT
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Product form

CNC-machined from certified 7075-T6 Ergal, RaceLite rear sprockets pair ultra-low weight with race-ready strength. Engineered for extreme conditions, they cut... Read more

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SKU: SR245-52.JT.A_BK
Barcode: 824225405972

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No hassle returns within 30 days

Description

CNC-machined from certified 7075-T6 Ergal, RaceLite rear sprockets pair ultra-low weight with race-ready strength. Engineered for extreme conditions, they cut rotating mass for quicker acceleration while maintaining exceptional wear resistance.

Features

7075-T6 Ergal aviation-grade aluminium construction
Precision CNC machining to tight JT tolerances
Ultra-low rotating mass for quicker acceleration
Designed for extreme pro-race conditions
High strength-to-weight ratio with excellent durability
Clean, consistent tooth profile for smooth chain engagement

Specifications

Material: 7075-T6 Ergal Aluminium
Tooth count: 52
Drive chain pitch: 520
Colour: Black

Vehicle Fitment

Honda (Road)

XR250 Tornado

Yamaha (Off Road)

YZ125 (1999-2026)
YZ125 50th Anniversary Ed. (2024)
YZ125 70th Anniversary Ed. (2026)
YZ125 Monster Energy Ed (2025)
YZ125 X (2020-2026)
TT-R230 (2005-2026)
WR250 F (1999-2000)
WR250 F (Enduro Version) (2001)
WR250 F (Off Road Version) (2001-2026)
YZ250 (1999-2026)
YZ250 50th Anniversary Edition (2024; 2026)
YZ250 F (4-Stroke) (2001-2026)
YZ250 F 50th Anniversary Edition (2024)
YZ250 F 60th Anniversary Edition (2016)
YZ250 F 70th Anniversary Edition (4-Stroke) (2026)
YZ250 F Monster (2021-2023; 2025)
YZ250 FX (2015-2026)
YZ250 Monster (2022)
YZ250 X (2016-2026)
WR400 F (1999-2001)
YZ400 F (1999)
WR426 F (2001-2002)
YZ426 F (2000-2002)
WR450 F (2003-2026)
YZ450 F (2003-2026)
YZ450 F 50th Anniversary Ed. (2024)
YZ450 F 60h Anniversary Edition (2016)
YZ450 F 70th Anniversary Ed. (2026)
YZ450 F Monster (2021-2023; 2025)
YZ450 FX (2016-2026)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ F 426	2000-2002
YAMAHA	YZ F 400	1999
YAMAHA	YZ F 450	2003-2004
YAMAHA	YZ F 450	2005
YAMAHA	YZ 125	2005-2020
YAMAHA	YZ 250	1999-2019
YAMAHA	YZ 125	1999-2019
YAMAHA	YZ F 250	2001-2019
YAMAHA	YZ F 450	2003-2019
YAMAHA	WR F 450	2003-2019
YAMAHA	YZ F 450	2006-2009
YAMAHA	WR F 450	2003-2016
YAMAHA	WR F 250	2001-2019
YAMAHA	YZ F 450	2010-2019
YAMAHA	YZ 125	1999-2004
HONDA	XL 250	1982-1987
HONDA	XR 250	1979-1983
YAMAHA	YZ 426	2000-2002
YAMAHA	YZ F 450	2017-2019
YAMAHA	YZ 250	1977-2019
YAMAHA	YZ 400	1977-2002
YAMAHA	WR F 400	1999-2002
YAMAHA	WR F 426	1999-2002
YAMAHA	WR 250	2000-2006
YAMAHA	WR F 250	2001-2007
YAMAHA	WR F 250	2008-2019
HONDA	XR R 600	1983-1990
HONDA	XL 500	1979-1984
HONDA	XL 600	1984-1994

Shipping & Delivery

How long will my item take to arrive?

Orders are typically dispatched within 1 working day and are shipped on a 24hour (non-guaranteed) service.

Where do you ship to?

We currently only ship orders within the UK.

How can I track my order?

Once your order has been dispatched, you will receive a tracking code. Tracking information is emailed to the email address that was provided when placing the order.

Can I collect my order?

Unfortunately we do not offer order collections from our fulfilment centre.