MCS Jets

37 products — part of all Jets

MCS jets for Harley-Davidson carburettors give riders a straightforward route to precise fuel metering when tuning around an aftermarket air cleaner or exhaust system. Carburettor jetting is one of the most direct levers available on older Harley-Davidson machines — a correctly sized main jet or pilot jet transforms throttle response and steady-state fuelling in a way that no amount of timing adjustment can replicate. MCS supplies jet options for Keihin CV carburettors fitted to XL Sportster and Big Twin models from the late 1980s through to fuel injection's widespread adoption, as well as earlier Keihin butterfly carburettors used across Harley-Davidson models from the mid-1970s. Whether you are sorting a lean surge on a mildly modified Evolution or chasing crisp delivery on a more heavily breathed Big Twin, having the right jet in hand makes the difference. Iron City Motorcycles, an authorised Harley-Davidson dealer in Leeds, stocks the MCS carburettor jet range through Iron Stable for UK riders keeping classic Harley-Davidson machines on the road. Browse the full MCS Jets range below.