Motorized Bicycle Performance Parts

CR Machine is a custom machine shop that specializes in offering the highest quality parts and engines in the industry.

All parts are meticulously inspected: Machining errors are corrected. Parts that are not correctable are scrapped.

Please allow several days to several weeks for Fred to complete your order.

Our products are intended to be sold only to end users of the product. 

CR Machine incorporates innovative technology in the products it sells.

In order to purchase from CR Machine, you must agree that your purchase will NOT be used as a sample for reproduction.

Theft of our technology may result in prosecution, as it violates the terms of sale.



GT-5 SUPER bottom end assembly GT-5 Super engine with 21mm carb
GT-5 SUPER bottom end assemblyGT-5 Super engine with 21mm carb

$275.00 GT-5 SUPER racing bottom end assembly

 Stolen by credit card theft: 425 Torrence ave, Calumet cityIL  

GT-5 SUPER Racing engine GT-5L race engine
GT-5 SUPER Racing engineGT-5L race engine

$475.00 GT-5 SUPER Race engine


$617.00 The amazing GT-5L powerhouse! Limited stock!

MPG-38 engine, NEW
MPG-38 engine, NEW

$385.00 MPG-38 engine for stock exhaust or "banana pipe".