*** IN STOCK SHIPS TODAY *** Mark VII/Mark VII-A, Mark VIII barrel valve O-ring kit nitro. RBS stocks JT Stewart/Wesco nitro-style barrel valve O-ring kits.
Don't be caught at the track with a O-ring leaking and not be able to fix it. Every racers should have at least one of these in there fuel injection parts box. This kit has the O-rings that will stand up to nitro use.