$8,999.00

125 RR Race 2-Stroke

Quick, precise, and lean—Beta’s 2025 RR Race models are built to do one thing: perform. With the name shortened to RR Race, Beta gets straight to the point with a lineup engineered to deliver race-level speed, control, and confidence.

Based on the new RR X-Pro platform, RR Race models receive focused upgrades to the engine, suspension, and chassis to create a bike that’s ready for everything from tight, technical tests to faster, wide-open courses—while maintaining the Rideability Beta is known for.

For 2025, Beta also targeted the 125 two-stroke with meaningful engine updates designed to boost performance across the entire rev range. A new piston and revised cylinder head increase power delivery and sharpen response, giving the 125 a stronger pull, a broader usable range, and a more aggressive top-end hit—without sacrificing low-end torque.

Specification 125 RR Race
ENGINE TYPE Beta Built single cylinder, 2-stroke, liquid cooled, with BPV power valve system, kick start
BORE 54mm
STROKE 54.5mm
DISPLACEMENT 124.8cc
COMPRESSION RATIO 15.2:1
VALVE TRAIN Beta Progressive Valve (BPV)
IGNITION AC-CDI Kokusan
SPARK PLUG NGK BR9ECMVX
LUBRICATION Pre-Mix
FUEL SYSTEM Keihin PWK 36mm
CLUTCH Wet Multi-Disk
TRANSMISSION 6 Speed
FINAL DRIVE O-ring chain
FRAME Molybdenum steel / Double Cradle w/ quick air filter access
WHEELBASE 58.1″
SEAT HEIGHT 37.4″
GROUND CLEARANCE 13.6″
FOOTREST HEIGHT 16.9″
DRY WEIGHT 207 lbs
FUEL TANK CAPACITY 2.6 US Gallons
FRONT SUSPENSION 48 mm KYB AOS closed cartridge, adjustable compression & rebound
REAR SUSPENSION KYB shock, 46 mm body, adjustable rebound & high/low speed compression
FRONT WHEEL TRAVEL 11.8″
REAR WHEEL TRAVEL 11.3″
FRONT BRAKE 260 mm floating rotor
REAR BRAKE 240 mm rotor
FRONT / REAR RIM 21″ Front / 18″ Rear
FRONT / REAR TIRE Maxxis Maxx Enduro
MSRP $8,999.00
NOTE *This model is for competition use only

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