The leading additive for rubber tyres on tarmac. Developed by Multiple World Champion Marc Rheinard.

MR33 proudly presents the “V4” version of indoor tire additive. The additive has a new formula and will help a lot to build up the groove on carpet very quickly. This will be noticeable on big events where new carpet is used all the time.

The new additive performs very consistent during the run and has a nature base without any chemicals inside! It will be delivered in 100ml bottles with a sponge applicator as it is well known from the previous versions!

Spider Blue works well on both rubber and foam tyres offering a very consistent and easy to drive feeling. Not quite as agressive as Green, using Blue is the perfect additive to start a race event.

Spider BLUE has become the 'go to' additive for GT12

SPIDER RED ADDITIVE.

This is an Oil based additive more suited to foam tyres on Asphalt but also works well on Rubber when the temperature is high.

Also used successfully on 1/8th foams.

Please Note: Now supplied in clear bottles.

SXT TYRE ADDITIVE