09310014 CYLINDER KIT 490cc 100mm BIG BORE

Name: ATHENA CYLINDER KIT 490cc 100mm BIG BORE
Brand: ATHENA
SKU: 09310014
Price: 562.31 GBP
Availability: InStock

Fits 3 bikes

£661.54 Save 15%

£562.31

incl. VAT

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Part #: 09310014

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§ 02 / About this part

What it is

The ATHENA CYLINDER KIT 490cc 100mm BIG BORE, top end. Stocked by Iron Offroad, the UK MX hard parts specialist.

This big bore kit increases displacement for a significant torque gain. It replaces your stock cylinder and piston assembly. The larger bore requires specific jetting or mapping changes to suit the increased airflow. It sits at the heart of your top-end rebuild. The kit includes all necessary gaskets and hardware for the conversion. Expect a broader powerband and more grunt out of corners. Verify your crank and rod are within spec before adding the extra load of a big bore. This is a performance-focused upgrade for serious trail or track use.

§ 03 / Specs

The numbers

Brand: ATHENA
Part number: 09310014
Category: Top End
Weight: 1.98 kg
VAT: 20%

// Fitment

Will it fit your bike?

Fits 3 models · 3 year-bands

Hm Moto 2 models

Honda 1 model

CRF 450 R 2002–2008

* 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.