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Motocross Parts UK
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Cylinder Head

Improves combustion efficiency and restores lost compression.

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Cylinder Head

Improves combustion efficiency and restores lost compression.

Brand
CYLINDER WORKS
Condition:
New
Delivery:
OUT OF STOCK
Delivery info
UK based Free deliveryOn orders over £50
£381.99(£318.33 ex VAT)

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Key benefits of fitting this part

Restores lost compression A fresh head restores correct valve seating and combustion chamber shape for consistent power.
Pairs with a big bore kit Pairs perfectly with a big bore kit to maximise your new power gains.
First check for lost power One of the first checks when an engine loses top-end power.

CYLINDER HEAD KIT CRF250R 2004-2007 / CRF250X 2004-2006 by CYLINDER WORKS CH1003-K01

  • New replacement cylinder head
  • Include cam caps and cam cap bolts
  • Include C630 (nickel/aluminum/bronze) valve seats and guides
  • Competition valve job
  • Shortened valve guides to accept higher lift cams
  • Unshrouded combustion chamber
  • Blended bowl seat to port
  • Stock shaped ports
  • Do not include valves, springs or lifters

Complete the fix

Piston Kit
VERTEX
Piston Kit
Our price £178.45
2-3 working days

Uses the product's default options

What our customers say...

First time buyer

First time using this site.  Loved how easy it was to find part.  Needed more info so rang up and the chap couldn't have been more helpful.  Would definitely recommend and will be back for more bits soon.

Matthew Perigo

Fantastic customer service!

Bought a camshaft stage 2. Quick delivery - great price and included free delivery. Drop in replacement cam. Can't fault it!

Colin Smith

Hot Rods Crankshaft

Crank arrived for my CR125R. Great quality from Hot Rods - bike back up and running in no time! Cheers Motocross Parts!

Danny Evans

Yamaha YZ250 parts

Ordered a Top End Rebuild for my Yam 250cc.

Good quality Vertex Kit arrived with free spark plug - and a free bottle opener! Nice touch. 100% recommend.

Brian Macdonald

Super easy!

Really easy to find parts... ordered and arrived before the weekend ready for racing. Great prices and great service :-)

Michael Evans

Needed help!

Spoke to customer services who advised on the parts for my sons bike.

Recommend and will be using again!

Paul Adams

Super Fast Delivery

Ordered a bottom end rebuild kit on Thursday and it arrived Friday morning. Great service! Thanks guys

Mr Carl Stewart
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