Shop for Performance Parts

Browse our extensive online performance parts catalog, featuring high quality parts from top manufacturers in the aftermarket industry, including our own in-house Kaizen Tuning products and packages. Choose your platform.

Ford Focus RS

Ford Focus ST

R35 Nissan GTR

R32 Skyline GTR

Nissan 370Z/Infiniti G37

Nissan 350Z/Infiniti G35

Mitsubishi Evo X

Mitsubishi Evo 8-9

Scion FR-S/Subaru BRZ

2015+ Subaru WRX

08-14 Subaru WRX STI

08-14 Subaru WRX

04-07 Subaru WRX STI

02-07 Subaru WRX

Authorized Pro Dealer/Installer

  • Scorpion Red Power - at Kaizen Tuning

Recent Posts

Project RS – Track Review

With less than 33 miles on the odometer, we headed to Thompson Motor Speedway in Thompson CT.

Project RS – ProTune Update

Kaizen Tuning has now unleashed some of the hidden powers....

  • Project Focus RS - Kaizen Tuning

Kaizen Tuning Project RS – First Reactions

The long waited Focus RS has now landed at Kaizen Tuning, we will soon unveil the secrets of what's hidden within....

Kaizen Tuning Starts Project RS

Boston-Area Tuner Launches Program to Uncover Performance Potential of Ford’s Newest Supercar, the Focus RS

  • Kaizen is named an HKS Pro Dealer

Kaizen Tuning Named HKS Pro Dealer!

Kaizen Tuning becomes one of the nations only HKS Pro Dealers. From SSQVs to FCON iS ECUs and GR6 Transmission Kits, we have HKS products on the shelves, in stock, ready to ship!