New to Powersport Superstore? Try our Year-Make-Model search and find the right parts for your ride by clicking "My Garage" on the upper-right! ➡

Wiseco PK1572 Top End Kit - 2.0mm Oversize to 56.00mm

Wiseco
Free
Shipping calculated at checkout.
In stock and ready for shipping
This is a pre order item. We will ship it when it comes in stock.
Bore: 56.00mm
Compression: Standard Compression
Sizing: 2.00mm Oversize

SPECIFICATIONS.
Displacement: 134cc.
Bore - Standard: 54.00mm.
Bore - Actual: 56.00mm.
Bore - Oversize: 2.00mm.
Stroke: 54.50mm.
Cylinders: 1.
Note: Pro-Lite.
ITEM CONTENTS.
2205CS - 56.00 mm Ring.
845M05600 - Yamaha YZ125 05-17 ProLite 2205CS.
B1001 - Top End Bearing 15 x 19 x 17.3mm.
CW15 - ROUND WIRE PIN LOCKS 15MM (PAIR).
S668 - PistonPin 15 x 47mm ID NonChromed TW.
W6331 - TopEnd Gasket Kit Yamaha YZ125 05-17.

Contains all the necessary components for overboring or rebuilding your top end. Feature forged pistons, rings, wrist pins, circlips and top end gasket set.

Vehicle Fitment:

2005-2022 Yamaha YZ125
2020-2022 Yamaha YZ125X
Secure, Trusted, and Encrypted

Protected by industry-leading 256-bit SSL encryption and backed by Shopify’s PCI DSS–compliant infrastructure. Every page, click, and transaction is encrypted and monitored for threats — so you can shop with confidence knowing your data stays protected.

Parts for Every Machine

We stock aftermarket parts, gear and accessories for motorcycles, ATVs, UTVs, snowmobiles, personal watercraft, and even performance cars — all backed by expert support and live inventory.

Real-Time Fitment Accuracy

Search by Year, Make, and Model with confidence. Our proprietary vehicle fitment system ensures you’re only shown what fits — no guesswork, no returns — just parts that fit.

Fast, Trackable Shipping

We ship from over 20 U.S. warehouses — often same or next business day. Every order includes tracking and transparent fulfillment updates from start to finish, all processed through a secure, encrypted checkout.

Quick Links

Ride With Us. Stay Connected.

Follow us for real-time fitment updates, gear drops, and pro tips from the garage. No spam, just parts, tech, and news for riders like you.

Your Garage

Add a Vehicle