Synchrotech 94-01 GSR ITR B16 Carbon Rebuild Kit B18B It is a must for

It is a must for users who want highly accurate boost pressure readouts up to 60 PSI or 4 BAR in their high performance vehicle

Includes: 75 PSIa or 5 Bar Stainless Sensor

This Kit includes all the components necessary to install the COP control board (NOT included) into your ECU for coil on plug ignition

it is not the only source

Synchrotech® Replacement 3rd Synchro Gear for OEM Gear

Synchrotech 94-01 GSR ITR B16 Carbon Rebuild Kit B18B It is a must forFitting: Y80 S80 S4C S21 Y21 (B16 B18C) Included: 1 5 Pro Series Carbon Lined Synchros, 1 5 synchro springs, brass reverse synchro and spring, 5 shaft bearings, bearing clip, 2 axle seals, input seal, shift rod seal, and a new dust boot.