The Garage Parts Sell Your Bike About Contact

Parts
Engine Parts
Pistons & Parts
Big Bore Piston Kit (Cast Lite) 57.95mm (+4.00mm) Yamaha YZ125 97-21 (144cc Big Bore) (B)

Athena Big Bore Piston Kit (Cast Lite) 57.95mm (+4.00mm) Yamaha YZ125 97-21 (144cc Big Bore) (B)

Athena

Big Bore Piston Kit (Cast Lite) 57.95mm (+4.00mm) Yamaha YZ125 97-21 (144cc Big Bore) (B)

SKU 134414ACN

£135.99

inc. VAT

In stock

Quantity

Ask about this part

Leave this field blank

Name

Email

Phone (optional)

Message

Bikes

The Garage
Sold Archive
Sell Your Bike

Shop

All Parts
Search
My Orders

C4

About
Contact

Boring but important

Delivery & Returns
FAQ
Privacy
Accessibility

Join the Club

New bikes land fast and go faster. Get first look — pick your metal: Custom, Classic, Chopper or Cruiser..

Need a used part, or something no longer made? Our sister site strips, tests and ships them — has done since 2003.

Visit Bike Wreckers

© 2026 C4 Motorcycles. Customs, Classics, Choppers & Cruisers. Website designed and maintained by MeliePants