This conversion kit will give your Rotax 912, 125 HP. It is more labor intense than the 1484 kits. You need a Heavy Duty EVERYTHING. The Case and Heads must be machined to fit the 92mm larger diameter cylinders.
Horsepower : 120HP
The compression ratio : 10.5:1
Displacement : 1622 cc
Bore : 92mm
This kit requires machining of the crank case and heads.