TRAXXAS TRX4 Pendulum Knuckle Axle Weight Set TRX4023XL by GPM  [TRX4023XL]

TRAXXAS TRX4 TRAIL CRAWLER Brass Extreme Heavy Edition Pendulum Wheel Knuckle Axle Weight-40pc set - GPM TRX4023XL
Price:
USD$83.90
Brand:
GPM
Model:
TRX4023XL
GTIN:
4894538288551
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alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Extreme Heavy Edition Pendulum Wheel Knuckle Axle Weight-40pc set - GPM TRX4023XL" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Extreme Heavy Edition Pendulum Wheel Knuckle Axle Weight-40pc set - GPM TRX4023XL"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Extreme Heavy Edition Pendulum Wheel Knuckle Axle Weight-40pc set - GPM TRX4023XL" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Extreme Heavy Edition Pendulum Wheel Knuckle Axle Weight-40pc set - GPM TRX4023XL"
alt="TRAXXAS TRX4 TRAIL CRAWLER Brass Extreme Heavy Edition Pendulum Wheel Knuckle Axle Weight-40pc set - GPM TRX4023XL" title="TRAXXAS TRX4 TRAIL CRAWLER Brass Extreme Heavy Edition Pendulum Wheel Knuckle Axle Weight-40pc set - GPM TRX4023XL"

Engineered pendulum weight overview

This precision pendulum wheel knuckle axle weight set is engineered for TRAXXAS TRX4 Trail Crawler platforms. CNC-friendly brass weight bodies combined with removable stainless steel rolling beads concentrate mass low and close to each wheel, improving tyre downforce during slow, technical crawling and across low obstacles.

The kit is intended for mounting to wheel knuckles and compatible portal outer drives to increase both static and dynamic wheel-end mass. The stainless rolling beads are removable to permit fine tuning of pendulum mass per wheel, and the hardware package supplies stainless screws, shafts and hex wideners to adapt to common TRX4 wheel hex sizes.

Installation guidance: align the pendulum assembly with the knuckle or portal flange as required by your wheel and hex setup, select the supplied hex widener to match your wheel hex, and secure with the stainless fasteners. After installation, verify unobstructed wheel rotation and confirm that added mass maintains clearance from suspension links and bodywork through full articulation.

Specifications

  • Item Pendulum wheel knuckle axle weight set
  • Material Brass bodies with stainless steel rolling beads and assorted stainless fasteners
  • Model Number TRX4023XL
  • Compatibility TRAXXAS TRX4 Trail Crawler
  • Set count 40 pcs
  • Single weight range 88–108 grams per pendulum weight
  • Single portal outer drive weight 42 grams
  • Hex wideners 9mm widener is 4mm wider than original, 12mm widener is 7mm wider than original
  • Maximum weight per side Up to 150 grams with portal outer drive and knuckle combined

A precision hardware upgrade aimed at hobbyists seeking controlled increases in wheel-end inertia for improved low-speed traction and stability; use the removable beads and supplied wideners to achieve repeatable tuning results.

This item is compatible with

  • TRAXXAS TRX4 Defender Trail Crawler

What engineering benefits do pendulum weights provide?

Pendulum weights add low-mounted rotational inertia and concentrate mass at the wheel, which helps tyres remain loaded at slow speeds and improves traction on steep or uneven terrain.

How should I calibrate bead count per wheel?

Start with a single bead per corner and test on a representative course, then add beads incrementally to achieve the desired slow-speed bite while monitoring articulation and driveline load.

Are hex wideners dimensional for standard TRX4 hexes?

Yes, the kit includes 9mm and 12mm wideners to accommodate different wheel hex sizes; the 9mm widener adds 4mm and the 12mm widener adds 7mm relative to the original hex dimensions.

What checks should I perform after fitting?

Verify secure fastener torque, confirm unobstructed wheel rotation through full articulation, and perform a short incremental testing sequence to assess handling and driveline behaviour before extended use.