Choose Bike Type

Street Fighter Kit

This kit was designed by T-Man Performance for the EVO customer looking to freshen-up their existing build while increasing the performance and torque. This kit’s designed to utilize a higher compression piston and coupled with a T-Man cam it can provide a significant increase in power and torque for your existing EVO motor. This kit is available in 80 or 84 cubic inch displacement. For more details on the best fit for riding style – call T-Man Performance.

Please NOTE:
At T-Man Performance we pride ourselves on providing our customers with performance kits that are known world-wide as a leader in proven dependability. We strongly suggest our customers research a professional tuner in your area.

NC State Sales Tax will be applied.

$ 1,696.95
Please contact us to order.

Due to age, paint may flake off during the cleaning process. T-Man Performance is not responsible for paint flaking.



EVO Street Fighter Kit

This is a great way to enhance your 80” EVO motor. We install an oversized intake and exhaust valve, open the ID of both ports to increase the flow, then hand blend our multi angle valve job to the seat bowls. We surface the head gasket area to increase the compression for our supplied piston. Add a T-Man cam to this package, and you have put new life into your older bike.

Click the Kit Details tab for a complete description of parts and labor. For more details on the best fit for your riding style- call T-Man Performance.

Kit packages require your cylinders and heads be sent to T-Man Performance for work to be completed.
* When not using T-Man Performance pistons the builder is responsible for checking all valve to piston clearances.


Intake Exhaust Chamber Size
Valve Sizes 1.940″ 1.610″ -.003 / 88cc
Valve Spring Installed Height 1.860″ 1.860″ -.020 / 85cc
Valve Spring Seat Pressure 178lbs 178lbs
Valve Spring Pressure @.600″ Lift 360lbs 360lbs -.040 / 82cc
Valve Spring Travel .770″ .770″
Valve Seal/Top Retainer Clearance .835″ .835″ -.060 / 79cc
Inlet Sizes