1981 Dirt Bike Magazine Hi-Performance Secrets - Works Bikes Secrets

Cover: High Performance rider Rex Staten blows up a berm on the equally high-performance Suzuki RM465

Contents: Rex's Barrel -the history of high performance; High-Performance Buyer's Guide; Go-Fast Formulations; Race-Prepping Honda CR250R; Basic Cylinder Secrets; Maximum Suspension Tuning; Gearing up for battle -don't commit a ratio slur; Flow Benching the Yamaha YZ250H; New Life for old bikes; Boost Bottles or bust bottles -magic or myth?; Carb tips and tuning; Make your mini move; Clutch & gearbox failures and fixes; Bulletproof wheel building; High-Performance directory; DNF -breaking the camel's back; more

CR250-R CR-250 YZ250-H YZ-250 RM-465

1981 November Dirt Bike Hi-Performance Secrets Motorcycle Magazine Back-Issue available at www.DadsVintageAds.com