Rubber Tire High Bite Sprint (HBS)

Molded 70mm front hex arm. Stock in the 2026 Assault, 2026 HBS, and 2027 Mistress. Must be used with GFR-1617 or GFR-1618 caster blocks. These have an available carbon fiber insert for added rigidity, or Brass insert for added weight (sold separately).

Black anodized aluminum rear camber link mount. Stock replacement for the 2026 Assault and 2026 HBS. Will work as a replacement for the GFR-1288M Rear Camber Link Mount. 

Set of 6 M4 x 16 Flat Head Screws

Complete transmission kit for the 2025 Laydown (no offset) transmission case. Includes a molded 39T idler gear, steel topshaft, and an aluminum slipper eliminator. Your choice of ball diff or gear diff. Designed for dirt oval application. 

Carbon fiber dust cover motor plate for the GFR-2075 +8, GFR-2117, and GFR-2097 25 Laydown transmission cases. Works with the GFR-2106 dust cover. 

Pair of V1 outer adjustable rear arms. Stock replacement for all 2021-2025 dirt oval cars. 

Pair of replacement V1 short adjustable inner rear arm. Stock replacement for all 2021-2023 dirt oval cars, 24 Assailant, 24 Assault HB, 24 Mistress, 25 Hustler, 25 Havoc, and 25 GFR1. 

70mm machined delrin arm. Uses the 2026 caster blocks

Black aluminum anodized adjustable thumb screws for rear adjustable arms. 4-40 threads

Pairs of GFRP loose dirt spring. 1.8" length small bore springs

Full spring kit of the GFRP loose dirt springs. 1.8" length small bore springs. White - 4# Red - 5# Green - 6# Purple - 7# Black - 8# Silver - 9#

Set of four machined inserts for the 2025 transmission cases. Comes with two 0mm inserts, and two 1mm inserts

Set of four molded inserts for the +8 transmission case. Comes with two 0mm inserts, and two 1mm inserts

Molded 39T Idler Gear

Aluminum 39T Idler Gear

Set of two shim kits. Can be used for hinge pins and shocks