Home / RC Car Parts / Engine Parts Product Description S022 Pull Start Suits Vertex. 18 & .21 Engine (27mm Screw Spacing) Replacement Pull Starter for Vertex CPX18 & 21 engines with 27mm pitch mounting holes and 12mm A/F hex drive. For fixing screws use Part# R021 Specifications Brand HSP Product Code S022 Weight 0.05kg Delivery HSP S022 Pull Start Suits Vertex. 18 & .21 Engine (27mm Screw Spacing) Item in Stock Product Code S022 RRP: £16.95 £14.50