J's Racing spent over 2 years to develop this header which can bring the maximum power output from the B-series engines. Most of the conventional headers use 42.7mm or 45mm piping but J's Racing uses 50mm piping so they ended up with the biggest piping with better flow. 50mm for primaries, 55mm for secondaries and 65mm collector were used. The low rpm torque and power are remarkably improved. T1.0mm thickness of piping were used to reduce as much weight as possible. Add an full exhaust system like the J's 60RR and really feel the difference!!!

PRICE: 680€