The TR-1 Chassis (TR-1シャーシ) is a Mini 4WD chassis released by Tamiya in 2002. Based on the Super X Chassis, it debuted with the release of Subaru Impreza WRC 2002 and is made exclusively for R/C Mini 4WD series.
The TR-1 has the wheelbase of 94 mm, which is longer than the wheelbase of the Super X Chassis. It retains that same driveshaft length and track lengths of the Super X. The TR-1 uses the 1.4 mm propeller shaft and drivetrain layout of the chassis is the same as Super X Chassis. It use the orange ground gears by default.
One of the unique features of the TR-1 is that it was made with the R/C system in mind, as it allows racers to controls the acceleration of the car. The bodysheel mounting method has been changed to the snap-type and the front bumper's design was changed because of this change.
TR-1 is not without its flaws, however, as existing bodyshells and most Grade-Up Parts are not compatible with the chassis. This leds to the premature demise of the TR-1 and also the R/C Mini 4WD series as the whole.
Length/Width/Wheelbase: N/A / N/A / 94 mm
Ground clearance: Unknown
Driveshaft's length: 72 mm
Compatible gear set(s): 5:1, 4.2:1, 4:1, 3.5:1
Terminal type: TR-type terminal
Weight (Chassis frame only): N/A
- The TR-1 Chassis is the only chassis where use of rechargeable batteries in official races are not permitted due to the current Mini 4WD race regulation. Instead, alkaline batteries must be used.
|Original series||Origin · Comical · Wild · Cruiser · RV|
| Type series|
|Type-1 · Type-2 · Type-3 · Type-4 · Zero · FM · Truckin' · Type-5|
| Super series|
(Super/Mighty, Fully Cowled/Aero)
|Super-1 · Super-FM · Super TZ · Super X · VS · Super TZ-X · Super XX · Super-II|
|R/C Mini 4WD||TR-1|
|PRO/REV||MS · AR · MA · FM-A · VZ|