WISECO piston kit with top-end gaskets for SUZUKI RM 85, RM 85 L from 2002 to 2023

WISECO offers this piston kit with top-end gaskets for SUZUKI RM 85, RM 85 L from 2002 to 2023. The piston slides in the cylinder and takes the force of the air-fuel combustion, passing it to the connecting rod and crankshaft.

Why choose a forged piston?

Instead of simply being cast, a forged piston is hot-pressed under very high pressure and then machined: its metal is denser and free of air pockets.

• Stronger when hot: it copes better with high revs, overheating and detonation.
• Lighter for the same strength: less stress on the connecting rod and bearings.
• Good to know: depending on the alloy, it expands a little more and is fitted with more clearance; slight noise when cold is normal.
• Why does it cost more? Forging tools, full machining and surface treatments cost more than simple casting.

Why choose WISECO?

Wiseco has forged its pistons in Mentor (Ohio, USA) since 1941 and controls the whole process, from aluminium bar to the friction-reducing ArmorGlide skirt coating. Its pistons are developed with Team Honda HRC in Supercross (450 class since 2018).

When should you replace the piston on your SUZUKI RM 85?

Harder starting, loss of power, blue smoke, oil consumption or a knock when cold: these are the signs of a tired top end.

Recommended hours for a top-end rebuild (manufacturer recommendation for the Suzuki RM 80 / RM 85):

• Racing: every 18 h (about 9 races).
• Leisure: no Suzuki figure; Cross-Mania guideline: compression check at around 36 h.

Specifications and fitting tips

• Contents: Pro-Lite Piston, Ring Set, Wrist Pin, Circlips, Bearing, Gaskets
• Bore: 48.00 mm
• Oversize: Standard
• Displacement: 84.7 cm³
• Piston diameter: 47.95 mm
• Stroke: 46.80 mm
• Complete piston kit with pistons, rings, pins, circlips and top end gasket kit for a whole engine

Cross-Mania tip: Measure the cylinder bore before ordering: the piston must match your cylinder size. Follow the manufacturer's break-in procedure.

Also needed with this part

• Spark plug : see the selection
• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063
• Air filter : TECNIUM · TWIN AIR

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
SUZUKI RM 85 2023
SUZUKI RM 85 2022
SUZUKI RM 85 2021
SUZUKI RM 85 2020
SUZUKI RM 85 2019
SUZUKI RM 85 2018
SUZUKI RM 85 2017
SUZUKI RM 85 2016
SUZUKI RM 85 2015
SUZUKI RM 85 2014
SUZUKI RM 85 2013
SUZUKI RM 85 2012
SUZUKI RM 85 2011
SUZUKI RM 85 2010
SUZUKI RM 85 2009
SUZUKI RM 85 2008
SUZUKI RM 85 2007
SUZUKI RM 85 2006
SUZUKI RM 85 2005
SUZUKI RM 85 2004
SUZUKI RM 85 2003
SUZUKI RM 85 2002
SUZUKI RM 85 L 2017
SUZUKI RM 85 L 2016
SUZUKI RM 85 L 2015
SUZUKI RM 85 L 2014
SUZUKI RM 85 L 2013
SUZUKI RM 85 L 2012
SUZUKI RM 85 L 2011
SUZUKI RM 85 L 2010
SUZUKI RM 85 L 2009
SUZUKI RM 85 L 2008
SUZUKI RM 85 L 2007
SUZUKI RM 85 L 2006
SUZUKI RM 85 L 2005
SUZUKI RM 85 L 2004
SUZUKI RM 85 L 2003