Two-stroke, single cylinder with case-reed induction, Beta Progressive Valve (easily adjustable powervalve)
Bore x Stroke (mm)
66.4 x 72 / 72 x 72
Keihin PWK 36
Electric start w Kickstart backup (starter beneath engine)
Chromoly steel tubing
48 mm Sachs w TFX Technology, 290 mm / 11.6 in travel [new longer gold legs, updated internals for 2017]
Progressive, Sachs shock absorber w adjustable rebound and high-and-low-speed compression, 290 mm / 11.4 in. travel
260 mm. disc, double-piston caliper
240 mm. disc, single-piston caliper
90 x 90 - 21" Michelin
140 x 80 - 18" Michelin
1481 / 58.3 (250 and 300)
Seat Height (mm/in)
930 / 36.6
Minimum Ground Clearance (mm/in)
320 / 12.6
Fuel Capacity (l/gal)
9.5 / 2.5 (includes reserve)
101.4 / 223 (250,300) [231 pound measured weight ready to ride, no gas]
Electronic oil injection, new enduro instrumentation, 6 month warranty
Fuel Injected 4Ts - Each With It's Own Personality
Available in 350, 390, 430, and 480cc displacements
Street-legal dirt bikes!
World Famous XTrainer
The Italian billy goat, now in it's third season!
The XTrainer features a 300cc 2T engine tuned for torque and easy rideability. Powertrain architecture is shared with the 300RR, but the XTrainer has unique powervalve, exhaust, and ignition tuning to make the bike even easier to ride. E-start, hydraulic clutch, cooling fan, and oil-injection are standard.
Many of the chassis components are shared with the bigger Betas, however the XTrainer is approximately 15% smaller, has a shorter 35.8" seat height, and weighs in at only 218 pounds. Goldentyre rubber is standard.
A New Thought on Trail Bikes - 125RR-s
From Dirtbiketest.com "This bike has more stalling resistance than most 250F motocross bikes and will chug along as if it were fuel injected. Yes, we were very surprised. So surprised we rode it up over 9000 ft. to see how it worked up there and it was very much unharmed. This is what entry level is supposed to be like."
I even rode one up and over Mount St. Helens at world-famous Glen Helen raceway - truly a remarkable bike.