EVO-R Conversion Chassis

The EVO-R conversion chassis is designed for platforms GRK GS2EVO and GS2 Modified (GS2MOD). Developed as a major evolution inspired by the GRK4/GRK5 philosophy, it adopts a new engine positioning and a structure in high rigidity carbon identical to the material used on the GRK5R prototype that won the SDC championship in the United States.

This kit aims to optimize rolling stiffness, the responsiveness of the front axle, as well as overall relief, to meet the demands of modern RWD drifting.

• Compatibility: GRK GS2EVO / GS2MOD

• Main frame in 2.5 mm carbon / Upper deck in 3 mm carbon

• Engine architecture inherited from GRK4/5

• HRP carbon material identical to that of the GRK5R (SDC USA champion)

• Geometry adapted to current RWD drift standards

• Supports steering rack GRK5 (R31S333)

• Compatible servo in central position via (R31S057) + GRK5 steering rack

• Compatible with future components GRK-R Gear Component

• Designed for more incisive behavior and an optimized roll center

• 2.5 mm carbon main frame

• 3 mm carbon upper deck

• Carbon parts and inserts required for conversion

• GS2EVO / GS2MOD models require gear adapter and bevel gear conversion towards GRK4/5 versions:

– (R31S067) GRK5 Gear Adapter

– (R31S069) GRK5 Bevel Gear 14T

• Depending on the differential configuration, further adjustments may be required.

• With a servo in horizontal position, possible interference with the upper deck may occur: the use of the servo mount 2WAY (R31S057) and of GRK direct servo horn (R31S108/109) is recommended.

• The original GS2EVO/GS2MOD battery holder is incompatible : you must upgrade to (R31S035) separate battery holder or the carbon versions (R31G018/R31G019).

• An official errata corrects two drilling errors in the included instructions (details provided in the original sheet).