Gap on ngk CR9EB plugs by RR | Dec 23, 2017 | RZR XP 4 Turbo | 0 comments Have a bikeman stage 3 tune on my car. Bikeman shipped these to me in the kit and we are changing them. What is a the gap. Can’t get ahold of anyone at bikeman. Sent from my iPhone using RZRForums.net Utah RZR Rentalswhence Submit a Comment Cancel replyYou must be logged in to post a comment.