12112371 REAR SPROCKET 420 45T BK

Name: MOTO-MASTER REAR SPROCKET 420 45T BK
Brand: MOTO-MASTER
SKU: 12112371
Price: 37.94 GBP
Availability: InStock

Fits 4 bikes

RRP £44.64 Save 15%

£37.94

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 12112371

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§ 02 / About this part

What it is

The MOTO-MASTER REAR SPROCKET 420 45T BK, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This 420 pitch aluminium part is built for small-capacity bikes and junior racers. It sits on the rear hub to manage the final drive. Aluminium offers a significant weight saving over standard steel parts. Replace it when the teeth begin to hook or thin. It is standard practice to fit a new chain at the same time to prevent uneven wear. Confirm your bike uses the 420 chain size before fitting. Use fresh bolts and thread lock for a secure installation. This part is designed for high-performance track and trail use.

§ 03 / Specs

The numbers

Brand: MOTO-MASTER
Part number: 12112371
Weight: 0.28 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 4 models · 5 year-bands

Gas Gas 1 model

MC 65 2023–2024

Husqvarna 1 model

TC 65 2017–2024

KTM 3 models

* Fitment data is provided as a guide. Verify compatibility against the bike's owner's manual or service handbook before ordering. Iron Offroad accepts no liability for incorrect application. Full terms and conditions apply.

§ 05 / About Iron Offroad

Iron Offroad

Iron Offroad is the off-road sibling of Iron City and Iron Stable — a UK shop for motocross, enduro, and trail-bike hard parts. Every fitment lives on the site, listed against KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is the data: fully enriched fitment so you find the right part for your bike quickly and get it fitted accurately. 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 and e-moto only. We operate from our storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. The business has a rich motorcycle history across multiple moto brands — the photos show where we came from — and recently pivoted into hard parts and online retail.