Kabuto Turbo-style glow plugs
SMJ have introduced new Turbo-style glow plugs in four different heat ratings for off-road and on-road engines. The P3 is an ultra hot off-road glow plug for low ambient temperatures that provides stable idling, making it ideal for all run-in tasks. Next up is the P4 super hot off-road plug for low ambient temperatures while the RP6 hot on-road and RP7 medium on-road plug are made for low temperatures and all-season weather respectively. The Japan-made plugs are available separately.
Source: SMJ [smj-rc.com]