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Gearbox output pinion JT. Steel Standard 1256 - 420

JT. Steel Standard 1256 - 420 Gearbox output pinion Ref : JTC00291A / 1077213003

JT. Steel Standard 1256 - 420 Gearbox output pinion

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JT. Steel Standard 1256 - 420 Gearbox output pinionRef : JTC00291A / 1077213003

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Description
Compatible motorbikes
Questions and answers

DescriptionJT. Steel Standard 1256 - 420 Gearbox output pinion

Product details :

Features

The JT SPROCKETS standard steel sprocket 1256 - 420 (manufacturer part number JTF1256.15) is designed to replace your original sprocket or modify the gearing on small off-road motorcycles. Machined from high-strength SMC420 steel using CNC technology, it combines durability and precise alignment for the entire transmission-chain system.

Material: SMC420 Steel
Number of teeth: 15 teeth
Chain pitch: 420
Type: 1256 — Standard version
CNC machining for controlled geometry and consistent wear
Lightweight and optimized design for easy installation and a good balance of strength and weight

Ideal for motocross and small off-road bikes, this sprocket fits on compatible 420 transmissions. It is suitable for riders looking for a reliable part for maintenance or to adjust the gearing according to their terrain and riding style.

Main compatibilities (examples):

HONDA CRF 50 F (AE04) – 2026 – 50 cc
HONDA CRF 70 F (DE02) – 2012 – 70 cc
HONDA CRF 50 F (AE03) – 2012 – 50 cc

Technical information :

Reference

JTC00291A / 1077213003

Front sprocket type

1256

No transmission chain

420

Pinion version

Standard

Number of teeth

15 teeth

Material

Steel

Compatible motorbikes

HONDA9 compatible models

CRF 50 F (AE03) - 2004/2012CRF 50 F (AE04) - 2013/2026XR 50 R (AE03) - 2002/2003CRF 70 F (DE02) - 2004/2012CR 80 R STD WHEELS 14/17 (HE04) - 1986/2002CR 80 R BIG WHEELS 16/19 (HE04) - 1996/2002CR 80 R BIG WHEELS 18/21 (HE04) - 1985/1986CR 85 R STD WHEELS 14/17 (HE07) - 2003/2007CR 85 R BIG WHEELS 16/19 (HE07) - 2003/2007