Wiseco

Wiseco Honda K-Series +10.5cc Dome 1.181x86.5mm Piston Shelf Stock Kit - K650M865AP

(No reviews yet) Write a Review
SKU:
WISK650M865AP
UPC:
00193564089700
MPN:
K650M865AP
Availability:
Regularly stocked product
  • Photo - Primary
  • User 3
  • Photo - out of package
  • User 4
  • User 5
  • User 1
  • User 6
  • User 2
$776.99
Current Stock: 5

Sold Out

Frequently bought together:

Description

Will these pistons fit my 2005 Subaru WRX STI?
Confirming exact vehicle fitment is crucial; consult your vehicle's specific application data before ordering these Wiseco Piston Sets.

Are these pistons difficult to install?
Professional installation is recommended for these high-performance forged racing pistons to ensure optimal engine function and durability.

Wiseco Professional Series forged racing pistons are engineered in the USA for heavy to severe duty 4-cylinder race builds, achieving a 10/10 use score for racing competition. Featuring custom-level performance and durability with premium rings, these pistons deliver race-winning power. Experience unwavering reliability and custom-tuned engine response with these American-made components.

What Owners Say

Owners and enthusiasts consistently praise Wiseco piston sets for delivering high quality at a competitive price point, with many noting they offer better value than comparable options while maintaining the reliability Wiseco is known for. The pistons themselves have earned strong reputations across multiple platforms, from LS builds to dirt bikes, with users reporting solid performance gains and dependable construction. Some enthusiasts note that while Wiseco pistons excel, certain accessory components like oil rings can require careful attention during installation. Overall, Wiseco piston sets have built a trusted name among engine builders who want proven performance without premium pricing.

Key Features

  • Professional Series forged racing pistons
  • custom-level performance and durability features
  • provided with premium rings
  • designed and built for use in heavy to severe duty race builds
  • Engineered, forged, and machined in the USA
  • Precision ring grooves, anti-detonation groove, and additional ring seal improving features

Why Choose the WIS Piston Sets - 4 Cyl

Delivers race-winning power and unwavering reliability under extreme conditions.

Achieves custom-tuned engine response for ultimate track control.

Provides superior sealing for maximum compression and horsepower gains.

Transforms your engine into a bulletproof powerhouse built for victory.

Who Is This For?

Racing Competition — 10/10
Designed and built for heavy to severe duty race builds.

Track / Autocross — 9/10
Professional Series forged racing pistons with custom-level performance.

Drag Racing — 9/10
Engineered for severe duty race builds, implies high stress.

Engine Performance — 9/10
Custom-level performance and durability features, premium rings.

Street Performance — 7/10
Forged racing pistons can offer enhanced street performance.

Frequently Asked Questions

Where are Wiseco 4cyl forged pistons engineered and manufactured?

Wiseco Professional Series forged racing pistons are engineered, forged, and machined in the USA. This ensures robust construction for demanding race builds, scoring a 10 for Racing Competition usage. Trust in American-made quality for your extreme engine needs.

Are Wiseco forged pistons worth upgrading from OEM for my 4-cylinder engine?

Upgrading to Wiseco forged pistons provides custom-level performance and durability features over OEM. They offer superior sealing for maximum compression and horsepower gains, transforming your engine into a powerhouse. This upgrade is highly recommended for serious racers seeking victory.

What kind of performance can I expect from Wiseco 4cyl forged pistons?

Expect race-winning power and unwavering reliability under extreme conditions with Wiseco forged pistons. Engineered for heavy to severe duty race builds, they achieve custom-tuned engine response for ultimate track control, scoring a 9 for Track / Autocross. Experience peak performance on the track.

What is the recommended installation process for Wiseco 4cyl forged pistons?

Professional installation is recommended for Wiseco 4cyl forged pistons. Confirm proper fitment with a qualified technician before installation to ensure optimal performance. This advanced installation ensures your engine is built for victory.

What is the best use case for Wiseco 4cyl forged pistons?

Wiseco 4cyl forged pistons are best for serious racers seeking custom-level performance and durability for demanding race applications. Their design and build are intended for heavy to severe duty race builds, scoring a perfect 10 for Racing Competition. Achieve bulletproof engine performance.

Additional Resources

Official Wiseco Product Page

Important Notices

⚠️ CARB Notice: This product is NOT legal for street use in California under CARB (California Air Resources Board) regulations. For off-road or race use only.

⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

View AllClose

Additional Information

CARB:
This product is not CARB Legal and not for sale in California
Clearance Item:
N
MPN:
K650M865AP
Proposition 65:
Y
Case Lot Quantity:
1
Category:
Engine Components>Piston Sets - Forged - 4cyl
Universal Fitment:
Y
Product Level:
Race Only
Racing Competition:
10/10
Track / Autocross:
9/10
Drag Racing:
9/10
Engine Performance:
9/10
Street Performance:
7/10
View AllClose

Related Products

Related Products