Racetech were the original manufactures of this type of 52mm PCD quick release coupling and were supplying these to Formula 1 teams in the 1980's. Since then the Racetech range has grown to reflect the wide variety of motorsport that Raceparts cater for.
The chart below is a handy guide to help you select the coupling which is going to be most suitable to you.
| 5/8" Dia. Slug | 3/4" Dia. Slug | 1" Dia. Slug |
3/16" Holes 2" PCD | RTQ1 | RTQ2 | RTQ5 |
3/16" Holes 70mm PCD | RTQ71 | RTQ72 | RTQ75 |
1/4" Holes 2"PCD | RTQ4 | RTQ3 | RTQ6 |
The part number shown above is for the black colour coupling. If you would like the gold coupling then please add a 'Y' to the part number, for example RTQ1 becomes RTQ1Y.
The above options show the most commonly used coupling in Formula Student. There are several other options available though.