1974 Cycle Hop-Up Magazine - cover: R.C. Engineering's drag bike burns it up out of the hole.

Feature: Why Hop Up? - is it worth the time and expense?; Technical: Go Fast to Order - that's R.C. Engineering's formula; Amal Carb Rebuild; Present Shock - Konis for your bike; Porting and Polishing for power; Lake Injectors; Compleat Guid to Pistons; Facts about spark plugs; Weber Carburetion for Superbikes; All about Carb Jetting and Tuning; Bike Hopups: More RPM for Sportsters; More Hots for Honda 350s; Hot Camming The Honda 750 Four; Super Cube Harley Street Racer; 650 Yamaha Express; 450 Honda Turn On; 400 Suzuki Hopup; 750 Honda Supertune; Superpower for 650 BSAs; more 1974 Cycle Hop-Up Motorcycle Magazine Back-Issue available at www.DadsVintageAds.com CLICK THE PICTURE TO "BUY IT NOW"