Living legend Steve “Brewdude” Garn revived on the salt… In late August, we drove cross country to attend the AMA Motorcycle Speed Trials at Bonneville Speedway outside Wendover, Utah — our first trip to the […]
Tag: Two-Stroke
Two-Stroke Titan: Suzuki T500 by Spencer Motoworks
A Tracked Combat Vehicle engineer builds himself a two-stroke custom… During the mid-1960s to 70s, when other manufacturers were touting the straight-line dragstrip performance of their two-stroke screamers — bikes with whisker-wide powerbands and widowmaker […]
El Citron: Kawasaki S3 Two-Stroke Triple by Motobrix
“El Citron? This thing should have been called El Diablo…” In 1974, Kawasaki unveiled the S3 Mach II, a 400cc two-stroke street triple with 42 hp and a dry weight of 339 pounds. The bike […]
Two-Stroke Desert Racer: Street-Legal Husky 390 OR
In the late 1970s, the Husqvarna 390 OR (Off-Road) was the king of the desert, a two-stroke monster that reigned supreme from the Mojave Desert to the distant tip of the Baja Peninsula. Said the […]
Endless Summer: Vintage Motocross Race
I love the smell of Bel-Ray in the morning… Here at BikeBound, if there’s one type of vintage racing we love most to watch and participate in, it’s probably vintage motocross. It’s hard to beat […]
Orange Crush: Yamaha RD350LC Hybrid
Dusty Miller builds an electric orange giant-killer… The Yamaha RD350LC was the first liquid-cooled evolution of the RD series, which appeared in 1980 to succeed the air-cooled RD400. It had the same bore and stroke […]
White Heat: Yamaha RD400 Hybrid
Retired firefighter Dusty Miller builds one hot RD! In 1975, the Yamaha RD400 appeared as the evolution of the RD350, featuring 51cc more displacement, new cases/barrels/head, a new airbox design, and a rubber-mounted engine. “The […]
Two-Stroke Hybritza: Yamaha 350 YPVS Cafe Racer
A project dream for 30+ years! At the Cologne Motorcycle Show in late 1982, Yamaha unveiled their new RD350 YPVS, featuring the breakthrough Yamaha Power Valve System, which utilized a servo motor to change the […]
Short Track Weapon: Yamaha YZ250 Flat Tracker
Swedish champion Ake Jansson builds a two-stroke tracker! In 2001, Motocross Action magazine claimed the ’01 Yamaha YZ250 was the world’s best 250 production motocross machine. The engine was the highlight, a liquid-cooled mill that […]
Small-Bore Speeder: Honda MB5 Land Speed Racer
Tim Klostermann of Economy Chopper sets out to beat the M-AG 50cc land speed record… For one year only (1982), the US market received the Honda MB5, a 50cc reed-valve two-stroke with a five-speed gearbox, […]





