CST 4 is a huge step forward in the RB20, 225 and 250 market. This
exhaust has been developed by Martin Cook. Having learnt what he
needed to from sprinting an RB and that from the CST 3, he developed
the ultimate RB touring pipe. Having run a competition early in 2017,
we found that our CST 4 made huge differences in all RB's available.
Instead of power and torque been around the 7500 RPM range, our pipe
makes it round 4000 RPM. Not only that but the exhaust has managed to
produce huge increases in torque, meaning finally the RB is a
cylinder kit, with our exhaust, that can be ridden off the mark
without huge amounts of throttle. Not only that but they are Hand
Made here in Britain! Looking for a touring road RB exhaust that gets
you huge amounts of torque and you don't
have to ride it like a maniac then the CST 4 is the pipe for you!
Suitable for RB Cyclinders
Before selecting your muffler of choice we recommend checking stock levels for the specific muffler before submitting your order.