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

2730 products
Brand Show all Brand
Vehicle Type Show all Vehicle Type
Material Show all Material
Price
  • -
Show all Price
Vehicle Fitment Combos Show all Vehicle Fitment Combos
Wiseco PK1216 Top End Kit - 1.00mm Oversize to 48.50mm
Free
Bore: 48.50mm Sizing: 1.00mm OversizeSPECIFICATIONS. Displacement: 86cc. Bore - Standard: 47.50mm. Bore - Actual: 48.50mm. Bore - Oversize: 1.00mm. Stroke: 47.8mm. Note: Pro-Lite. Note: Nikasil Bor...
8% Off
Wiseco PK1217 Top End Kit - 2.00mm Oversize to 49.50mm
$182.45
$182.45
$197.95
Bore: 49.50mm Sizing: 2.00mm OversizeSPECIFICATIONS. Displacement: 92cc. Bore - Standard: 47.50mm. Bore - Actual: 49.50mm. Bore - Oversize: 2.00mm. Stroke: 47.8mm. Note: Pro-Lite. Note: Nikasil Bor...
Wiseco PK1218 Top End Kit - 3.00mm Oversize to 50.50mm
Free
Bore: 50.50mm Sizing: 3.00mm OversizeSPECIFICATIONS. Displacement: 96cc. Bore - Standard: 47.50mm. Bore - Actual: 50.50mm. Bore - Oversize: 3.00mm. Stroke: 47.8mm. Note: Pro-Lite. Note: Nikasil Bor...
Wiseco PK1219 Top End Kit - Standard Bore 73.00mm, 10.5:1 Compression
Free
Bore: 73.00mm Compression: 10.5:1 Compression Sizing: Standard BoreSPECIFICATIONS. Displacement: 249cc. Bore - Standard: 73.00mm. Bore - Actual: 73.00mm. Bore - Oversize: STD. Stroke: 59.5mm. Compr...
10% Off
Wiseco PK1220 Top End Kit - 0.50mm Oversize to 73.50mm, 10.5:1 Compression
$231.99
$231.99
$257.95
Bore: 73.50mm Compression: 10.5:1 Compression Sizing: 0.50mm OversizeSPECIFICATIONS. Displacement: 252cc. Bore - Standard: 73.00mm. Bore - Actual: 73.50mm. Bore - Oversize: 0.50mm. Stroke: 59.5mm. ...
Wiseco PK1225 Top End Kit - 0.50mm Oversize to 48.00mm, 9.7:1 Compression
Free
Bore: 48.00mm Compression: 9.7:1 Compression Sizing: 0.50mm OversizeSPECIFICATIONS. Displacement: 81cc. Bore - Standard: 47.5mm. Bore - Actual: 48.00mm. Bore - Oversize: 0.50mm. Stroke: 45.00mm. Co...
10% Off
Wiseco PK1226 Top End Kit - 1.00mm Oversize to 48.50mm, 9.7:1 Compression
$168.99
$168.99
$187.95
Bore: 48.50mm Compression: 9.7:1 Compression Sizing: 1.00mm OversizeSPECIFICATIONS. Displacement: 83cc. Bore - Standard: 47.5mm. Bore - Actual: 48.50mm. Bore - Oversize: 1.00mm. Stroke: 45.00mm. Co...
7% Off
Wiseco PK1227 Top End Kit - 1.50mm Oversize to 49.00mm, 9.7:1 Compression
$174.94
$174.94
$187.95
Bore: 49.00mm Compression: 9.7:1 Compression Sizing: 1.50mm OversizeSPECIFICATIONS. Displacement: 85cc. Bore - Standard: 47.5mm. Bore - Actual: 49.00mm. Bore - Oversize: 1.50mm. Stroke: 45.00mm. Co...
10% Off
Wiseco PK1230 Top End Kit - 1.00mm Oversize to 54.00mm, 9.4:1 Compression
$210.99
$210.99
$234.95
Bore: 54.00mm Compression: 9.4:1 Compression Sizing: 1.00mm OversizeSPECIFICATIONS. Displacement: 103cc. Bore - Standard: 53.00mm. Bore - Actual: 54.00mm. Bore - Oversize: 1.00mm. Stroke: 45.00mm. ...
10% Off
Wiseco PK1236 Top End Kit - Standard Bore 78.00mm,12.9:1 Compression
$293.99
$293.99
$326.95
Bore: 78.00mm Compression: 12.9:1 Compression Sizing: Standard BoreContains all the necessary components for overboring or rebuilding your top end. Feature forged pistons, rings, wrist pins, circli...
10% Off
Wiseco PK1237 Top End Kit - Standard Bore 77.00mm, 13.1:1 Compression
$277.99
$277.99
$308.95
Bore: 77.00mm Compression: 13.1:1 Compression Sizing: Standard BoreSPECIFICATIONS. Displacement: 250cc. Bore - Standard: 77.00mm. Bore - Actual: 77.00mm. Bore - Oversize: STD. Stroke: 53.60mm. Cyli...
10% Off
Wiseco PK1240 Top End Kit - Standard Bore 78.00mm, 13.5:1 High Compression
$326.99
$326.99
$362.95
Bore: 78.00mm Compression: 13.5:1 High Compression Sizing: Standard BoreSPECIFICATIONS. Displacement: 249cc. Bore - Standard: 78.00mm. Bore - Actual: 78.00mm. Bore - Oversize: STD. Stroke: 52.2mm. ...
Wiseco PK1241 Top End Kit - Standard Bore 77.00mm, 12.7:1 Compression
Free
Bore: 77.00mm Compression: 12.7:1 Compression Sizing: Standard BoreSPECIFICATIONS. Displacement: 250cc. Bore - Standard: 77.00mm. Bore - Actual: 77.00mm. Bore - Oversize: STD. Stroke: 53.6mm. Compr...
10% Off
Wiseco PK1241 Top End Kit - Standard Bore 77.00mm, 12.7:1 Compression
$312.99
$312.99
$347.95
Bore: 77.00mm Compression: 12.7:1 Compression Sizing: Standard BoreSPECIFICATIONS. Displacement: 250cc. Bore - Standard: 77.00mm. Bore - Actual: 77.00mm. Bore - Oversize: STD. Stroke: 53.6mm. Compr...
8% Off
Wiseco PK1253 Top End Kit - Standard Bore 54.00mm
$218.94
$218.94
$238.95
Bore: 54.00mm Sizing: Standard BoreSPECIFICATIONS. Displacement: 125cc. Bore - Standard: 54.00mm. Bore - Actual: 54.00mm. Bore - Oversize: STD. Stroke: 54.5mm. Note: Pro-Lite. ITEM CONTENTS. 2126CS...
10% Off
Wiseco PK1261 Top End Kit - Standard Bore 54.00mm
$210.99
$210.99
$233.95
Bore: 54.00mm Compression: Standard Compression Sizing: Standard BoreSPECIFICATIONS. Displacement: 125cc. Bore - Standard: 54.00mm. Bore - Actual: 54.00mm. Bore - Oversize: STD. Stroke: 54.5mm. Not...
Wiseco PK1262 Top End Kit - 0.50mm Oversize to 54.50mm
Free
Bore: 54.50mm Sizing: 0.50mm OversizeSPECIFICATIONS. Displacement: 127cc. Bore - Standard: 54.00mm. Bore - Actual: 54.50mm. Bore - Oversize: 0.50mm. Stroke: 54.5mm. Note: Pro-Lite. Note: Nikasil Bo...
10% Off
Wiseco PK1262 Top End Kit - 0.50mm Oversize to 54.50mm
$202.99
$202.99
$225.95
Bore: 54.50mm Sizing: 0.50mm OversizeSPECIFICATIONS. Displacement: 127cc. Bore - Standard: 54.00mm. Bore - Actual: 54.50mm. Bore - Oversize: 0.50mm. Stroke: 54.5mm. Note: Pro-Lite. Note: Nikasil Bo...
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