MCB offers dual ring pistons for Ski-Doo models
Dual rings help improve reliability
Story by Staff, Photography by MCB Performance, Feb. 10, 2010Email a friend Print Friendly RSS
Original equipment on these models is a single ring design and according to MCB, this design experiences some reliability issues.
Our dual ring design is a proven fix for considerable reliability improvements over the stock design, MCB Performance says in a release. These dual ring pistons are sold and used all around the world from trail riders, to hill climb racers, water cross racers, etc.
Benefits of dual ring design:
More effective heat dissipation from the piston due to the dual ring lands.
Improved overall ring seal for complete combustion.
Considerably less power fade due to heat soak.
Reduces backfire that is sometimes seen after shutting the sled off.
Reduces the need to open the throttle at warm start up.
Dual rings stabilize the piston within the cylinder more effectively reducing piston slap and skirt wear.
The pistons ability to dissipate heat more effectively reduces the possibility of detonation caused by heat, low octane, ethanol, overall poor fuel quality.
Our rings are Alloy steel, ferrox coated chrome faced. All rings are OEM and interchangeable with OEM pistons or MCB pistons.
Pistons are hypereutectic cast, high silica content for proper hardness and less prone to cold seizure.
All pistons have MOS2 (Teflon-molybdenum) coated skirts, and HRB-105 hard anodized
Individual piston kits (MSRP $125) include: one piston, two rings, wrist pin, and wrist pin circlips. Complete piston kits (MSRP $299) include: two pistons, four rings, two wrist pins, four circlips, two caged needle bearings, and a complete top end gasket set. All complete kits include a full set of instructions for installation and ring end gap, cylinder wall clearance specifications.
Applications for Dual Ring include:
2003-2007 600HO models carb and SDI 72mm bore (all)
2001-2007 800 non HO and HO motors 793cc, 82mm bore (all).
2007-2010 800-R mono block motors
For more information, visit MCBPerformance.com.