Another awesome upgrade line up TPC has developed is the ball bearing conversion of the popular BNR Supercar bolt on Mazda Speed turbo upgrades.

TPC is currently the only real turbocharging company offering this ball bearing upgrade for these bad boys. Making the already good even better.

Price listed to have your BNR S2 S3 or S4 converted from JB to BB for quicker spool up from a stop, between gears and better torque down low. Keep in mind you will need re-tune as there will be new found torque in the lower rpm power band.

The process involves machining the turbine housing in multiple steps and swaping out the CHRA with a BB version. Your compressor wheel must be intact to keep the posted price.

Contact us if you have any question.