MINI ENGINE MODIFICATIONS
SUPERMINI ENGINE BUILDS
KTM 85 SUPERMINI
Above pricing is based on a new
engine supplied to Pro Circuit.
Cost varies depending on engine
supplied by customer.
SHORT CARBURETOR MODIFICATION
GOVERNOR SPRING KX85/100 2002-2013
POWER VALVE (TWO-PIECE) KX85/100 1998-2013
ADJUSTABLE POWER VALVE KTM 65 SX
The Short Carburetor Modification will increase throttle response, increase power from bottom-to-top
with more over rev and choke removal.
Having your carburetor bored will improve mid-to-top power and is available for the KX85/100 and
CRF150R models only.
The stock governor spring on the Kawasaki KX85/100 is too stiff causing the valve to open too late,
which results in a dip in the horsepower curve. The Governor Spring allows the valve to open at the
right time, eliminating the dip in the horsepower curve and resulting in improved bottom-end.
The Pro Circuit Power Valve for the KX85/100 lowers the exhaust port height to where it should be,
resulting in huge gains in the bottom-end while maintaining horsepower. This power valve combined
with the governor spring will provide a major improvement over the stock set up.
Pro Circuit’s Adjustable Power Valve for the KTM 65 SX allows the tuner to adjust the horsepower
curve. You can also use the pre-set setting that it comes with.