GPM GPM023X Brass Pendulum Knuckle Weight for Traxxas TRX-4  [GPM023X]

Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X
Price:
NZD$61.95
Brand:
GPM
Model:
GPM023X
GTIN:
4894538293050
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alt="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X" title="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X"
alt="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X" title="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X"
alt="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X" title="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X"
alt="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X" title="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X"
alt="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X" title="Brass Pendulum Wheel Knuckle AXLE Weight + 21mm Hex Adapter - 20pc set - GPM GPM023X"

Pendulum Knuckle Weight for Better Wheel Contact

Install the GPM Brass Pendulum Wheel Knuckle Weight to increase wheel-end mass on the Traxxas TRX-4 and compatible models. The lower-mounted weight improves tyre bite and reduces the tendency to skip off obstacles.

Packing includes

  • 31mm Hex Adapter for TRX4 - 2pcs
  • 21mm Hex Adapter for other models - 2pcs
  • Stainless Steel Pin 2x10 - 2pcs
  • 5mm Spring Steel Shims - 2pcs
  • 5mm Metal Washer w.opening - 2pcs
  • 19mm Stainless Steel Hex Socket Screws - 2pcs
  • Metal Washer for GMADE models - 2pcs
  • M4x2.5x11 Pin - 2pcs
  • 12x18x4 Bearings - 2pcs

Original Name / Part No:

Same as original

Compatible Models

  • Traxxas TRX-4
  • Axial SCX-10 I & II
  • HPI Venture 116564
  • GMADE Sawback / Sawback 4LS / Komodo

Design and practical use

The pendulum form has a bearing-supported pivot and a delrin collar so the weight narrows near the axle and broadens below. This geometry keeps tyres in better contact over ledges and uneven tracks while allowing free rotation of the weight.

Specifications

  • Weight: 128 grams (excluding bearings and collars)
  • Hex Widener Size: 31mm for Traxxas TRX-4, 21mm for Axial and GMADE models
  • Wheel Compatibility: Inner diameter 45mm, wheel shaft hole 5mm

A solid choice for builders wanting improved climbing stability without complex chassis changes.

What electronics suit this upgrade?

Standard crawling servos and ESCs work fine. If you run very heavy wheel weights front and rear, consider checking chassis balance and using a torque servo to handle extra steering load.

Will I need to trim wheel wells or links?

Most installations are bolt-on using the provided adaptors, but verify suspension travel and steering clearance during a static fit to avoid binding at full lock.

How should I maintain the pendulum bearings?

Keep the bearing clean and lightly lubricated with a suitable RC bearing oil. Inspect for play after heavy runs and replace bearings if wear appears.

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