2024 BOMB MOTO B2 Rolling Chassis w/motor
Limited stock available now with new inventory being added daily
ALL-NEW 2026 B2 ROLLING CHASSIS W/MOTOR
The Bomb Moto B2 is your chance to take electric dirt biking to the next level. Newly enhanced for 2026, the B2 now features the powerful QS120 70H motor, delivering high RPMs, serious torque, and upgraded performance. Along with a refreshed display and thoughtful refinements, this chassis is built for riders who demand more from their builds.
Designed with adults and experienced riders in mind, the B2 offers top speeds over 60 mph and a punch of torque rarely found in pit bikes. Sized perfectly for riders 16 and up, it’s the ideal choice for those who have outgrown kid-sized bikes but still want the excitement of a compact, trail-ready machine.
Like the B1, the B2 Rolling Chassis with Motor delivers both value and performance. Simply add your preferred battery, controller, and throttle, and you’ll be ready to hit the trails and make moto memories with a ride built just for you.
PRODUCT HIGHLIGHTS
• ALL-NEW DIY "adult" electric pit bike platform
• Unsprung QS mid-drive motor
• 13kW peak recommended power tune (150a at 84v)
• High-performance, moto-spec braking system
• Foot brake
• Ships from a US company in California
• Just add battery, controller/throttle... and ride!
• Accommodates Bomb Moto B2 battery
THE ADULT E-PIT BIKE
The B2 is sized like an 85cc MX or 125cc trail bike, featuring 17/14-inch wheels and a 31.9 inch/810mm seat height (slightly shorter than a Surron LBX). Weight and motor wear are reduced via an unsprung mid-drive motor and lightweight, aluminum swingarm. Bigger, stronger and more powerful than a B1, the B2 is the perfect adult e-moto pit bike platform.
FORM MEETS FUNCTION
The B2's bold moto styling is complemented by its meticulous fit and finish. Notable features include an adjustable 1,000 lb rear shock, durable plastics, true moto brakes, handlebar w/crossbar (not pictured) and 428H chain.
MEGA TORQUE ON TAP
The QS120 V3 special edition motor that powers the new B2 features a 4,900rpm peak, torque bias, and internal gear reduction for increased torque without deviating from a standard rear sprocket. With a recommended constant tune of 125a and a peak of 150a output, this motor can handle controller peak tunes up to 13kw (riders have even seen 15kw+ bursts).
QSMOTOR is a leader in electric motors due to their quality control, reliability and performance. We tested several motors, and this one came out on top.
KEY FEATURES
Specifications
Motor
QS120 V3 BLDC inner rotor motor, 60mm magnets, 5 poles
Rating: 4,900rpm (higher w/ flux)
Rated: 2,000w, 80a, 72v, 120NM torque
Peak Power: 11kw
Top Speed: 50mph+ (depending on controller/tune)
Recommended Tune: 125a (150a peak for max 20 seconds)
Gear Ratio: 1:2.35
Sprocket: 14-tooth
Waterpoof Rating: IP66
Thermic Probe: KTY82/122 included
Working Temperature: 70-120 degrees Celsius (150C peak)
Hall Sensor: Single hall set with waterproof connector
Cooling: Air
Max Efficiency: <93%
Battery Line: 150a peak (recommended)
Gear reduction: Yes
Chassis & Components
Frame: Steel
Swingarm: Aluminum
Triple clamp: Forged Steel
Handlebar: Aluminum, 31" wide, 22mm diameter, crossbar (not pictured)
Suspension, Front: Inverted 48mm fork, 170mm travel (shorter than pictured)
Suspension, Rear: Single shock, adjustable for rebound & preload, 57.5mm travel
Brakes: True hydraulic disc brakes, master cylinders w/fluid sites, braided brake lines, high-temp rotors
Front brake: Two-piston caliper, 220mm, 4mm wide disc
Rear brake: Single-piston caliper, 190mm, 4mm wide disc
Maximum rider weight: 210 lbs
Chain: #428H
Durable plastics with Bomb Moto graphics
Controller mount (w/metal cover if not using mount). Controller mount designed for Far Driver. Note Far Driver may change mount position and heat sink size which may require some manual adjustment.
Battery level indicator in cockpit
Dimensions
Weight (with/without battery): ~150/120 lbs
Dimensions: 1,750 x 770 x 1,080mm
Wheelbase: 1,190mm
Seat Height: 810mm
Ground Clearance: 335mm
Sprockets: 14/48 (1:3.43)
PHOTO GALLERY
