GRK5-R Conversion Chassis KitSupervised by HAYATO – SHIBATA GRK RACING International Driver Introducing the GRK5-R Conversion Chassis Kit, the first release from HRP (HAYATO Racing Performance) — a competition-focused brand developed exclusively for the GRK series and supervised by HAYATO, ace driver of SHIBATA GRK RACING. Engineered to meet HAYATO’s uncompromising performance demands, this kit is designed specifically for competitive driving with the GRK5-R platform. Premium Custom Carbon Material To fulfill HAYATO’s strict requirements, a specially commissioned carbon fiber material is used, custom-manufactured at a domestic Japanese factory.This ensures an exceptional balance of rigidity, strength, and weight reduction for high-level racing performance. GRK5-R Dedicated Layout The main chassis eliminates the remaining general-purpose elements found in the standard design, resulting in a GRK5-R layout–specific chassis that achieves both increased rigidity and reduced weight.Versatility is sacrificed in favor of pure performance. Innovative Hybrid Upper Deck Structure Through extensive design iterations, prototyping, and track testing, an entirely new hybrid upper deck structure was developed to achieve the ideal balance of roll and pitch rigidity: Front section: Flat upper deck Rear section: Lightning-inspired vertical upper deck This unique structure delivers precise chassis response, improved stability, and consistent handling under competitive conditions.
