GRK GRK4 コンペティションコンバージョンキット ver.2

An alloy nose cone, and an adapter so GRK4 and GRK5 cars can take it

SHIBATA has released an aluminium nose cone for GS2MOD and GRK4 fitments plus a GRK4/5 conversion adapter, alongside a GRK5 carbon servo mount plate and three priced option parts. The thread running through the list is backwards compatibility: cars already in the pits get updated rather than replaced.