0
£0.00
Phone0800 689 1957 Email[email protected]
Motocross Parts UK
0
£0.00

Big Bore Cylinder Kit

CYLINDER KIT YZ125 2005-2020 58MM 144CC BIG BORE

More cc, more torque - the single biggest power upgrade for your bike.

CYLINDER KIT YZ125 2005-2020 58MM 144CC BIG BORE
Actual Verified Photo Verified: actual photo of product
Brand
ATHENA
Part No:
P400485100030
Condition:
New
Delivery:
1-2 working days
Delivery info
UK based Free deliveryOn orders over £50
£977.60(£814.67 ex VAT)

⚠️ low stock

🚀 this item is selling fast

Key benefits of fitting this part

Real power increase Increases displacement for a genuine, noticeable jump in torque and top-end power.
Bolts onto stock cases Bolts onto your existing crank cases, so there's no need for a full engine swap.
Most popular power mod The upgrade most riders reach for first when they want more from their bike.
Brand
ATHENA
Part No:
P400485100030
Condition:
New
Delivery:
1-2 working days
Delivery info
UK based Free deliveryOn orders over £50

Product description

CYLINDER KIT 144CC 58 MM STANDARD BORE

S410485308019 Cylinder Head,,,
P400485160014 Gaskets Kit,,,
S4C05800001A Piston Kit 57,94 - Athena Kit,,,
S4C05800001B Piston Kit 57,95 - Athena Kit,,,
S410485303011 Valve Spring For Yz 125 (1 Pc),,,,
S410485303018 Valve Assy Kit,,,

Related products

Piston Kit
VERTEX
Piston Kit
Our price £104.95
1-2 working days

Uses the product's default options

What our riders 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
Trustpilot

Stop overpaying for parts that do the exact same job.

Select your bike and see every part built for it — race-grade quality, guaranteed fit, dealer prices left behind.

Find my parts

Our website uses cookies for essential functionality, to remember your choices and to analyse anonymous visitor statistics. For further information, please see our privacy policy.

Looks like you're in
United Kingdom

Please confirm your location so we can show you the correct delivery options and prices.