16mm XTR Piston Fat Boys 2.7 w/ Bypass1, 6 Hole

Select Pistons or Set with Hardware. 4 pcs 16mm XTR piston.  Pistons are marked 1.3 x 6 hole, 4 each per bag.

New for summer 2026 in 2.7mm thick "Fat Boy" thickness for hot weather and big jumps.  Pistons have "2.7H" on the back side to denote the new thickness.

The Schelle 16mm XTR piston lineup was developed in 2024 with Kurt Wenger's Schelle custom valving utilizing the proven MIP Bypass1 platform.  The pistons, made in Covina, CA at MIP, are a custom spec design that is not available anywhere else.  Piston O.D. and 2.5mm thickness is based on the "H" Hi-Flow profile.   The unique Bypass1 system was the perfect way to add extra tuning to the rebound stroke of the shock and improve jumping, prevent wheel hop, all while keeping the vehicles smooth and predictable in turns.   Racers can use MIP's patented Bypass1 system with colored valves to fine tune the rebound speed engineered to work in a wide range of conditions and take full advantage over the Xtra Tune-able Rebound (XTR!) of the system.

Includes:

1.  Pistons are marked 2.7H for 2.7 Fat Boys.
2.  Does not include MIP Bypass1 valves, hats, or any hardware.  Compatible with any Bypass1 hardware sets. 
3. Popular truck and buggy baseline packages are to split drill 3 x 1.4 rear with 6x1.3 front
4. Popular DNC package (*available in menu):  1.3-1.4 split front and 1.4-1.5 split rear (3 of each size)
5. Popular Thornhill high pack:  1.2 front and 1+5 split 1.2/1.4 rear.
6. Part Number 1538