TLR® engineering has turned the drastically improved 22™ 4.0 buggy kit forwards and backwards. The result is a dominant 17.5-class SPEC racer that’s under ROAR weight, right out of the box with the options and tunability you need.
- LIGHTWEIGHT 2.5MM HARD-ANODIZED 7075 T-6 ALUMINUM CHASSIS
- VLA FRONT SUSPENSION
- 3-GEAR LAYDOWN TRANSMISSION
- SR COMPOSITE-ALUMINUM DIFFERENTIAL
- REVISED MOTOR LOCATION
- TRANSVERSE OR FORE-AFT BATTERY MOUNTING OPTIONS
- GEN II 12MM BIG-BORE SHOCKS
- TICN COATED SHOCK SHAFTS AND HINGE PINS
- ALUMINUM BLEEDER CAPS
- ADJUSTABLE REAR PIVOTS FOR TOE AND ANTI-SQUAT
- ADJUSTABLE ALUMINUM REAR CAMBER BLOCK
- BELL CRANK STEERING SYSTEM
- TLR DIRECT DRIVE SYSTEM (DDS)
- NEW SPINDLE WITH ADJUSTABLE TRAIL AND ACKERMANN
- REAR HUB WITH ALUMINUM PLATE
- SCREW MOUNTED REAR WING
- STIFFEZEL MUD GUARDS, ARMS, WATERFALLS
- REVISED OPEN END BALL CUPS
- ALUMINUM DRIVESHAFTS WITH LIGHTENED STEEL AXELS
- ADJUSTABLE DIFF HEIGHT, LAYDOWN
- ADJUSTABLE SHOCK LOCATION, LAYDOWN
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.
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.
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.
An all-new, 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.
11.0 in (280mm)
Varies with equipment
2.5mm Milled Plate, 7075-T6 Aluminum
Lower A-Arm, Upper Adjustable Link
2.2 in Buggy (Required)
Motor or Engine:
540 Size (Required)
2.2 in (56mm)
12mm Big Bore, Oil Filled
22 4.0 Cab Forward, 0.5mm ULW Clear
Full Rubber Sealed Ball Bearings
Is Assembly Required:
Electronic Speed Control
48 Pitch Pinion Gear