This SCJ1906H wheel and tire assembly is an aftermarket 1/10 scale upgrade designed for trail and rock crawlers. The machined aluminum 6-spoke wheel uses a high-tensile alloy and pairs with a deep-groove crawler tire pattern to boost traction on steep or uneven terrain. The wheel accepts a 12mm hex and fits a 5mm shaft hole configuration common to many 1/10 rock crawler setups.
A principal feature is the internal brass pendulum weight provided as a 100g insert in each wheel. By placing mass low in the wheel, the added weight increases downward force at the contact patch to help the vehicle hold lines and climb steeper angles without adding electronic ballast. The tire lug design works with the weight to improve low-speed grip rather than altering suspension geometry or final drive ratios.
Key dimensions and measured masses for tuning: outer diameter 115mm, inner diameter 48.26mm (1.9"), tire width 40mm, wheel hex size 12mm, single wheel weight (without brass) 172g, single brass weight 100g. Use these values when calculating unsprung mass, gearing, or shock valving adjustments to retain crawl character.
Fitment notes: made for 1/10 crawlers running 1.9" tires with 12mm hex hubs and 5mm shaft hole compatibility. Confirm hub and hex standards on your chassis before fitting. The package includes two assembled wheel-and-tire units, each with the 100g brass insert installed.
This wheel-and-tire set is aimed at drivers who want added mechanical weight and improved tread traction without modifying drivetrain parts, providing a direct method to increase low-speed performance for scale crawling rigs.
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