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§ 01 / Part

12112331 REAR SPROCKET 520 51T BK

£45.19 Save 15%
£38.41

incl. VAT

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Usually dispatched within 3 working days.

Part #: 12112331

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MOTO-MASTER

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§ 02 / About this part

What it is

The MOTO-MASTER REAR SPROCKET 520 51T BK, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This aluminium component reduces unsprung weight at the hub. It mounts directly to your rear wheel to drive the final transmission. Teeth eventually hook or thin through grit and chain friction. You should replace this alongside a new chain to ensure even wear across the drive train. This 520 pitch part fits specific MX and enduro models. Check your bolt pattern against OEM specifications before fitting. Use new bolts and thread lock during installation. It provides a lightweight alternative to steel for track use.

§ 03 / Specs

The numbers

Brand
MOTO-MASTER
Part number
12112331
Weight
0.41 kg
VAT
20%

§ 05 / About Iron Offroad

Iron Offroad

Iron Offroad is the off-road sibling of Iron City and Iron stable — this is a UK shop for motocross, enduro, and trail-bike hard parts. All fitments live on the site, and listed against MX models KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is in the data, fully enriched to assist with accurate fitting and finding the right part for your bike quickly and easily. Brands you'd find on a paddock workbench; pads, sprockets, plastics, fork seals, cables, gaskets, bars, the things that actually wear out. Road-bike kit, scooter parts, and quad gear sit elsewhere. Dirt & e-moto only. We operate from our huge storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. We have a RICH motorcycle history with multiple moto brands the images showing where we came from and our history, the business recently pivoted into hard parts and online retail.
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Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK-based support · 9 to 5 Race-shop prices, paddock service Click & collect from Leeds
Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK-based support · 9 to 5 Race-shop prices, paddock service Click & collect from Leeds