BBR D3 Exhaust w/ Carbon End Cap - TTR125 RockyMtn For SCUT 138 cc: C1

For SCUT 138 cc: C1 adapter + M5 temperature sensor

Large dome light weight piston for super high performance

Each set is precision fit to a specific make and model

Below are documents that include protrusion and install heights specs for both valves (click links below):

BBR D3 Exhaust w/ Carbon End Cap - TTR125 RockyMtn For SCUT 138 cc: C1D3 Exhaust System TTR125 BBR's new D3 exhaust is the latest generation in BBR's legendary D Section exhaust systems. This design incorporates an air craft quality stainless steel header that has been tuned specifically to optimize performance and power gains. An all new, lightweight "D" profile muffler is used to drastically reduce weight on all models. BBR's unique "D" muffler also allows for maximum tire clearance and packing volume. A lightweight