This is a Traxxas TRX 2.5 and 2.5R Piston and Sleeve kit.  If you have several gallons of fuel through your engine, it may be time for a new piston and sleeve.  It is a direct replacement.  Included are one piston, one sleeve, and two wrist pin clips.  The sleeve has a notch to insure correct positioning.  Regain the power lost because of your worn out piston and sleeve.  The TRX 2.5 or 2.5R engines are used in the T-Maxx, S-Maxx, Revo, Jato, Rustler, etc.

Features:

• Piston/sleeve is ABC construction
• Four port design

Includes:
One piston
One sleeve
Wrist Pin Clips

Requires: Installation into engine

Specifications:
Sleeve length: 27.6mm (1.08")
Piston diameter: 14.7mm (0.58")