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Motorbike parts and tools

Transmissions

Gearbox output pinion Renthal Steel Self-Cleaning 257 - 428

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Renthal Steel Self-Cleaning 257 - 428 Gearbox output pinionRef : RT00338A / 1077790001

Recommended retail price:24,46 €?

22,00 ^€

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Description
Compatible motorbikes
Questions and answers

DescriptionRenthal Steel Self-Cleaning 257 - 428 Gearbox output pinion

Product details :

Features

RENTHAL Mud-Resistant Steel Sprocket 257 - 428, 13 Teeth (Manufacturer Part No: 257--428-13GP)

Designed for the motocross world and developed in competition, this Renthal sprocket combines precision machining with a mud-resistant profile to keep the transmission clean and efficient in muddy conditions. Its specific geometry facilitates mud evacuation and limits accumulation between the chain and the sprocket, ensuring consistent performance in technical sections.

Type: Sprocket 257, mud-resistant version
Material: Steel (nickel-chrome-molybdenum alloy known for its strength)
Number of Teeth: 13
Chain Pitch: 428
Terrain Advantages: Better mud evacuation, reduced weight compared to the original part, good balance between efficiency and longevity
Recommended Use: Competition / demanding riding

This sprocket is aimed at 85cc riders and motocross machines requiring a robust solution specifically designed to withstand muddy conditions. Compatible with certain YAMAHA YZ 85 models (e.g., YZ 85 LW BIG WHEELS 19/16 CB10, YZ 85 2026, YZ 85 CB09 2012) — check the original sprocket number before installation.

Technical information :

Reference

RT00338A / 1077790001

No transmission chain

428

Pinion version

Mudguard

Number of teeth

13 teeth

Material

Steel

Compatible motorbikes

YAMAHA7 compatible models

YZ 85 (CB07) - 2004/2004YZ 85 (CB09) - 2005/2012YZ 85 LW BIG WHEELS 19/16 (CB05) - 2002/2003YZ 85 LW BIG WHEELS 19/16 (CB08) - 2004/2004YZ 85 LW BIG WHEELS 19/16 (CB10) - 2005/2026YZ 85 - 2024/2026YZ 85 (CB04) - 2002/2003