Jconcepts Fin 13mm Spring Cup 5mm Off-Set Black For Associated 13mm Spring 27032 RPM This is the Sanwa/Airtronics MX-6

This is the Sanwa/Airtronics MX-6 FH-E 3-Channel 2

and nested tread

Achieve fine lines

Pair the rear Ellipse for the Mini-T and Mini-B with the #4002 Ellipse front for the ultimate indoor and grooved outdoor track conditions

Traxxas TRX4

Jconcepts Fin 13mm Spring Cup 5mm Off-Set Black For Associated 13mm Spring 27032 RPM This is the Sanwa/Airtronics MX-6The spring cup is a finishing touch when it comes to a complete 13mm shock build for spring concentricity. The JConcepts spring cups are a 5mm off set which is the most popular setting on the front of the B6 and B6. 4 vehicle. The aluminum material in either blue or black anodizing provides a healthy footing for the hot new spring of choice or the trusty stock AE 13mm spring set. The cups feature a unique shock shaft path which helps lock the spring