- Move the mouse over the thumbnail to see bigger pictures.
- To see the shipping cost, if any, just add the items to the shopping cart and then enter your zip code.
- The wrenches "
" indicate the difficulty level for installing the product. - Can't find what you're looking for? Click here to send us and an email
Patrick racing High compression pistons have been the reference standard for performance improvement for the Roadstar for years. These pistons are the proven way to immediately boost the performance of the Roadstar engine without going through radical modifications. Patrick racing High compression pistons have been the reference standard for performance improvement for the Roadstar for years. These pistons are the proven way to immediately boost the performance of the 1600cc & 1700cc Roadstar engines without going through radical modifications.
Note - Standard bore diameter:
1600 = 95 mm
1700/Warrior = 97 mm
These pistons are the result on a cooperation between Patrick Racing and JE Pistons and they upgrade the compression ratio to 10.25:1 for stronger performance throughout the rev. range. Kit comes complete with rings, wrist pins and clips.
Usually ships next dayUsually ships next dayUsually ships next day
PR Big Bore Kits have been developed to dramatically increase the performance of your Yamaha Road Star. Oversize iron liners are installed in the stock cylinders (your cylinders are used as a core), precision bored and honed.
This is the same big bore kit that is uses on the AMA/Pro Star race bikes. Kit comes complete with PR Hi-Comp Piston Kit (100mm or 101mm) and oversized PR head gaskets.
Cylinders have to be sent to us for reboring and usually takes about 4-6 weeks.
