RENTHAL SPROCKET R 520 51T RD SC TWIN

§ 01 / Part

12100823 SPROCKET R 520 51T RD SC TWIN

Fits 19 bikes
RRP £120.88 Save 20%
£96.70

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 12100823

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RENTHAL

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§ 02 / About this part

What it is

The RENTHAL SPROCKET R 520 51T RD SC TWIN, motocross part. Stocked by Iron Offroad, the UK MX hard parts specialist.

This bi-metal component uses a high-strength steel outer ring bonded to a lightweight aluminium inner. It mounts to your rear hub to drive the bike forward. The steel teeth provide the durability needed for abrasive UK conditions, lasting significantly longer than standard aluminium. Replace this part when you notice the teeth hooking or thinning. A 51-tooth setup increases low-end pull for technical enduro sections or tight MX tracks. Always fit new sprocket bolts and use a medium-strength thread lock to ensure the assembly remains secure under heavy load.

§ 03 / Specs

The numbers

Brand
RENTHAL
Part number
12100823
Weight
0.82 kg
VAT
20%

// Fitment

Will it fit your bike?

Fits 19 models · 22 year-bands

* 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.
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Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement
Free UK shipping over £100 14-day no-quibble returns OEM-grade parts only UK support · Tue–Fri 9–5, Sat 9–4 Race-shop prices, paddock service Collection from Leeds by arrangement