This is a Tamiya 42391 1:10 TRF421X Chassis Kit. Key Upgrades & Features: Aluminum Lower Deck (2.0mm) & Motor Mount: Lowers the motor by 1.04mm for an optimized center of gravity, balance, and chassis flex. Updated Upper Decks: Redesigned 1-piece and 2-piece options for improved flex. The 1-piece deck utilizes shims (0-0.3mm), tubes, and titanium screws for precise tuning. Carbon-Reinforced Suspension: Upgraded arms and new damper stays (moved 1.0mm inward) ensure stability on hot or high-grip surfaces. Optimized Drivetrain: Bearing-equipped front double cardan and rear universal shafts eliminate friction; direct spool cups and rear diff are upgraded to steel. Adjustable Geometry: Narrower upper arm mounts (1mm) improve cornering response. New knuckle arms offer tuned Ackerman positioning and optimized rear grip options. Included Tuning Extras: Comes with 1.2mm and 1.3mm stabilizers, a 30g battery weight, and a 20g receiver weight (which doubles as a cooling fan mount). *Note: The majority of these upgraded components are fully compatible with the standard TRF421 chassis.* Required to Complete: 2-channel radio, low-profile steering servo, ESC, 540 motor, wheels and tires, 190mm TC/Sports Car body, 7.4V battery pack, and compatible charger.
Condition: Factory New Operational Status:Functional Original Box: Yes
Manufacturer: Tamiya Model Number: 42391 MSRP: $1274.00
Category 1: 1:10 - RC Category 2: Chassis & Frame
The Trainz SKU for this item is P12848342.
Trainz Product Id: 12848342
WARNING:
This product can expose you to chemicals including but not limited to lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov
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