This is the JConcepts Traxxas Big Bore Shock Limiter Kit Scalpel Conversion.
The Scalpel conversion kit has been popular on and off the track. JConcepts has released a shock limiter kit to make the off-road to on-road transition that much easier. 6 pieces of long and 4 pieces of short nylon travel limiters are included in each package.
Install 1 short limiter inside each front shock and 1 long limiter on the outside of the shaft per the included diagram. The rear is completed by adding 2 long limiters inside each rear shock and 1 short limiter on the outside of the shaft. Add the desired oil front and rear and assemble the shocks, install them back onto the vehicle and set ride-height as normal.
One JConcepts Traxxas Big Bore Shock Limiter Kit Scalpel Conversion