Welcome to ProPinch.com

Do you have a worn out sleeve? No compression when engine is at operating temp, flame-outs, erratic idle, hard starts? ProPinch can help.

ProPinch is your single source for piston sleeve renewing and modding of nitro powered racing engines.

Our ultra precision proprietary tooling and attention to detail sets us apart. We are not using the pinch ring clamp thing or the CNC roller method.

Our resizing process insures a perfectly round bore every time. We also have the ability to regulate the resize interference fit (pinch) from light to heavy in .0001 increments. We recommend the factory tolerance of .0003" (medium light) to start.

Internet sleeve resizing special!!!

$25.00 per sleeve or 3 for

$60.00 and we always include FREE return shipping.

Internet engine modifying special!!!

$65.00 (includes sleeve resizing if needed) and FREE return shipping.

This new Axial racing  engine to date is the most powerful and dependable we have tested. We have successfully resized the piston sleeve to exceeded  factory specs. 

Remember big horse power numbers sell engines, broad midrange torque bands win races.

Has your motor lost it's Pinch? (compression)       

     GET IT BACK FAST!

        WE WILL:

REMATCH SLEEVE TO PISTON

REESTABLISH  FACTORY TAPER

HONE TO FACTORY LAPPED FINISH

      YOU WILL SEE:

LIKE NEW TORQUE & HP

COOLER TEMPS

EASY STARTS

SOLID IDLE

GALLONS ADDED TO MOTOR LIFE

 We specialize in resizing and modifying everything from high end Italian  engines to all the RTR kit engines. Traxxas, HPI, Duratrax, Associated, Losi, Magnatech, CEN, XTM are all Welcome. The entire range of 12,15,18,21 and the Big Block truggy stuff is our specialty.

Mail your piston and sleeve or engine for modifying to us today.

If you have any questions or just want to touch base with us feel free to call 414-699-6944 any time between 10am and 10pm 7 days a week.