The Projector Doctor may have the parts you are looking for: projectordoctor.com/Repairs
if the sprockets and gears aren't chipped or cracked theres no need to repalce them. the timing belt is usually what causes the problems anyway.
you need to replace the who gear it is cracked or chipped
To replace bike gears effectively and efficiently, follow these steps: Gather the necessary tools such as a screwdriver, wrench, and replacement gears. Remove the old gears by loosening the bolts and sliding them off. Install the new gears by aligning them properly and tightening the bolts securely. Test the gears to ensure they are shifting smoothly before riding.
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You replace the gears in the axles.
Pulley and Wheel and Axle P.S. Bacon tastes good. Suppa Nicholaz. C.O.D. ACC355_HITS
Your speed sensor is faulty replace it...
The car could be jumping when you switch gears for a number of different reasons. You might need to replace something.
You probobly need to replace the clutch.
When you increase horsepower, there's typically a torque increase which goes along with it. You could also replace your rear end gears with taller gears.
replace the chain and gears
Its called a wrench and a lot of patience