09240315 CRANKSHAFT BEARING AND SEAL KIT

Name: PROX CRANKSHAFT BEARING AND SEAL KIT
Brand: PROX
SKU: 09240315
Price: 29.57 GBP
Availability: InStock

Fits Yamaha YZ 125

£34.79 Save 15%

£29.57

incl. VAT

In stock — ships in 3 working days

Usually dispatched within 3 working days.

Part #: 09240315

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§ 02 / About this part

What it is

The PROX CRANKSHAFT BEARING AND SEAL KIT, bottom end. Stocked by Iron Offroad, the UK MX hard parts specialist.

These kits provide the essential components for a bottom-end rebuild. The main bearings support your crankshaft within the engine cases. The seals maintain primary compression and prevent oil migration. Over time, bearings develop play or begin to rumble. Worn seals cause air leaks, leading to lean-running and potential seizures. This kit matches OEM specifications for a precise fit on your bike. When installing, heat your cases and freeze the bearings to ensure they seat correctly. Check the seal orientation before final assembly to avoid workshop errors. Essential for maintaining engine tolerances during high-hour service intervals.

§ 03 / Specs

The numbers

Brand: PROX
Part number: 09240315
Category: Bottom End
Weight: 0.36 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 1 model · 1 year-band

Yamaha YZ 125 1980–1985

* 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 — 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.