Are you looking for that
perfectly custom built racing engine for your bike? If so,
you're in the right place.
Rotax DS 650
Strong, lightweight and capable
of making huge power, the DS 650 makes a great dune/trail engine or all out drag race/hill shooter.
Click on an image below to
view a larger, more detailed version.
$600 dune/trail porting-stock
$1,200 desert race/hill climb +1
$1,800 drag race/hill shoot
$600 titanium valves- includes
custom locks and lash caps
$300 cylinder head setup-
includes disassembly, lap deck, lap valves,
reassemble, set valve spring installed height, set
cams produce explosive torque and horsepower from
3000-7000rpm for stock bore and big bore engines.
Works great with full weight bike and 275lb + rider.
cams produce smooth tractable power in the lower rpm
range and come on with a wall of power from
4000-8000rpm. Works best with 730-800cc engines.
cams are for drag racing only. 6000-10000rpm custom
ground for your application.
One of the weak
links of the DS 650 motor is the right side crank
journal. OMW performs modifications to
strengthen this journal through "cryo"
treating the crank and machining a radius to improve
modifications are performed on all of our stroker
Modify stock crank*
5mm Falicon stroker*
8mm Falicon knife rod stroker*
prices includes counter balance and case
650 Big Bore
The OMW big bore
cylinder kit is a bolt-on performance item. Simply
pull your stock cylinder and piston off and put this
one on. It increases displacement to 730cc.
Includes new 105.5mm cylinder, piston with file
fitted rings, and gaskets. It can be setup for
11.5:1 pump gas or 13:1 race gas. Couple this
cylinder with the
or use the long skirt version of this cylinder with
the 8mm stroker for
of ground thumping power.
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