M4 exhausts: full racing exhaust systems. JHS are the sole UK agents and importers of these very high quality, US-made performance exhaust systems.
We use M4 pipes with the Supertwin machines that we build. We choose M4 because the dyno shows that no other pipe can deliver such dramatic gains from the Suzuki SFV650 engine, while offering outstanding build-quality at a competitive price.
M4 exhausts are available for a range of fitments and motorcycles.
M4 slip-on end cans
Slip-on end can kits from £250.00 (call for details).
M4 full race system for the Suzuki SFV650 from £709.00
M4 oval silencer cans are available with Polished Aluminium, Carbon Fibre or Titanium sleeves.
- 304 Stainless steel construction
- 2 into 1 design
- Stainless steel end caps (polished)
- Stainless steel silencer core
- Oval silencer design. Polished Aluminium, Carbon or Titanium.
Standard, Race and High Sport System comes with mounting hardware & instructions.
Please contact us for prices or visit our Online Store for details of specific products available for your bike.
All M4 systems will increase power output of your motorcycle over its stock system, but to gain the most benefit we recommend that the system is installed by one of our expert fitters and the bike is then checked on our dyno.