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Team Losi Racing 22 4.0 SR SPEC-Racer 1/10 Mid-Motor 2WD Electric Buggy Kit

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This item is discontinued and no longer available for purchase. It has been replaced by TLR03018.
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Low Price: $249.99
Discontinued Online

The TLR 22 4.0 SPEC-Racer 1/10 Mid-Motor 2WD Electric Buggy Kit is an all inclusive buggy kit optimized for stock racing. The 22 4.0 SPEC-Racer kit takes the drastic improvements made in the on-track performance of the 22 4.0 and maximized the drivetrain for spec racing. The car was designed with a goal to turn the weight loss requirement into a performance gain opportunity. For starters, the car has shed weight by replacing carefully chosen stock parts with high end options that reduce weight and increase performance. The biggest gains are in the transmission, where you find a Direct Drive System with a shortened top shaft, an aluminum diff with composite outdrives and aluminum CVA driveshafts with lightened steel axles that are all combined to minimize overall weight and rotating mass.

In true TLR fashion, handling was a particular focus. A laydown transmission moves the motor forward by 20mm+ to a central motor location and provides two diff heights-standard 3.0mm and +3.5mm for carpet and Astroturf. This creates a chassis that drives much flatter, more consistent and corners quicker, especially on throttle which is critical for spec racing.

All told, the 22 4.0 SPEC-Racer weighs in under the ROAR minimum weight of 1499g, with no modification. But it's the moment you hit the track when the advantages becomes clear. Front to back, the 22 4.0 SPEC-Racer is more capable of competing for wins right out of the box than any other stock 1/10 2WD buggy in its class.


  • Weighs in Under 1499g: There's no need for titanium hardware to make minimum ROAR weight. The 22 4.0 SPEC-Racer, when built with the kit hardware and the recommended Orion® and Spektrum™ electronics weighs under 1499g when ready to hit the track.
  • Laydown Configuration: The 3-gear laydown transmission moves the motor forward by 20mm+ to a central motor location, providing a chassis that drives much flatter, more consistent and corners quicker-a crucial advantage in the 17.5 spec buggy race class.
  • Lightweight Drivetrain: To maximize the top speed and performance of a stock motor, the drive train has been lightened with a Direct Drive System including a shortened top shaft, narrower idler and diff gears, aluminum diff hubs with composite outdrives and aluminum CVA driveshafts.
  • Stiffezel Suspension Components: The higher glass content of Stiffezel molded composite is strategically used on suspension components to provide more consistent and stable driving. This includes the front and rear suspension arms, mud guards and the waterfall chassis brace. The result is a buggy that lands plushly and corners more consistently.
  • Adjustable Rear Shock Location: The rear shock tower can be flipped for forward or rearward mounting. This means the Gen II rear shocks can be mounted in front of the rear tower and suspension arm, or in the traditional location on the back of the arm. This is a popular tuning option for high-grip surfaces that increases forward weight bias, rear end stability and landing ability.
  • Gen II 12mm Big Bore Shocks: These shocks continue to set the standard for high performance and easy maintenance. Features include X-Ring Seals, machined shock bushings, machined 2mm x 1.6mm and 2mm x 1.7mm pistons, TiCN coated shock shafts, aluminum bleeder screw caps, hard-anodized threaded shock bodies, low-frequency springs and spring cups that snap onto the shock shafts.
  • Aluminum-Plate Rear Hub: The molded-composite hub base allows a bearing to be press fit without play and minimal unspring weight. An aluminum plate is secured to the hub with an M3 screw and ball stud which is vertically adjustable. That way, the ball stud is supported by aluminum from pushing or pulling out, while still threading into composite so it can't work loose.
  • Ballast Tuning Options: When running a higher static weight, the chassis is more neutral and easier to drive on ultra-high-grip surfaces. Optional brass ballast weights (sold separately) can be mounted under the servo, under the electronics and under the laydown transmission idler. This makes it easy to tune the static weight and weight bias for changing track conditions.
  • Lightweight 7075-T6 Aluminum Chassis: The chassis can accommodate multiple battery mounting options. Milled pockets have been added that lighten the overall weight of the chassis. The pockets also function as mounting stations for the optional brass ballast weights (sold separately).
  • Included Option Parts: The 22 4.0 SPEC-Racer kit comes loaded with optional upgrades like a milled 7075 aluminum top shaft, motor plate, rear camber block, clamping rear hexes and ball stud spacers throughout. It also includes aluminum bleeder shock caps, machined shock pistons and internals.
  • Ultra-Lightweight Body: The low-profile body was designed for the 22 4.0 buggy that provides outstanding aerodynamic performance. For the 22 4.0 SPEC Racer, the body is pulled from 0.5mm polycarbonate to significantly save weight and maintain outstanding performance.

Approximate Assembly Time:
3-5 Hours    
Ball Bearings: Full Rubber Sealed Ball Bearings    
Batteries: Required    
Body: 22 4.0 Cab Forward, 0.5mm ULW Clear    
Brakes: Controlled via Motor/ESC    
Charger: Required    
Chassis: 2.5mm Milled Plate, 7075-T6 Aluminum    
Completion Level: Kit    
Differential: Composite-Aluminum Ball Differential    
Drivetrain: 2WD    
Front Track: 9.8 in (248.5mm)    
Gear Pitch: 48-Pitch    
Height: 5.8 in (148mm)    
Internal Gear Ratio: 2.43:1    
Length: 15.0 in (382mm)    
Motor Size: 540 (Not Included)    
Painted or Clear Bodies: Clear    
Radio: 2 Channel (Required)    
Rear Track: 9.8 in (250mm)    
Servos: Required    
Shock Type: 12mm Big Bore, Oil Filled    
Size/Scale: 1/10    
Speed Control: Required    
Spur Gear: 69T    
Suspension: Lower A-Arm, Upper Adjustable Link    
Vehicle Type: Race Kit    
Weight: Varies with equipment    
Wheel Diameter: 2.2 in (56mm)    
Wheel Type: 22 Dish    
Wheelbase: 11.0 in (280mm)    
Width: 9.8 in (250mm)

Needed to Complete:

  • Motor
  • Electronic Speed Control
  • Servo
  • Tires
  • Radio System
  • 48 Pitch Pinion Gear
  • Charger
  • Battery
  • Paint
  • Tools

This product was added to our catalog on August 29, 2017