The GPM BMT0503R+889 set is supplied ready-mounted for HPI Bullet 3.0 MT and ST nitro variants. Rubber tyres are installed on reinforced nylon rims and retained with an alloy 5-star beadlock to maintain tyre seating under heavy loads. 12x9mm drive adapters are provided to streamline installation onto compatible rear hubs.
The tyre compound combined with robust nylon rims provides controlled compliance and long term durability. The alloy beadlock design secures the tyre bead against movement, helping preserve consistent traction during aggressive acceleration and cornering.
Included 12x9mm drive adapters broaden fitment across common HPI rear drivetrains, simplifying replacement or upgrade procedures. This wheel set is suitable for hobbyists seeking a dependable rear assembly that supports competitive and heavy use.