WOSSNER piston kit for KTM SX 150 from 2016 to 2019

WOSSNER offers this piston kit for KTM SX 150 from 2016 to 2019. 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 WOSSNER?

Wössner has forged its own pistons since 1994: Molykote-coated skirt to reduce friction and ease running-in, kit supplied complete with rings, pin and clips.

When should you replace the piston on your KTM SX 150?

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 KTM SX, Husqvarna TC 125-300 2017-2022):

• Racing: every 20 h.
• Leisure: no KTM figure; Cross-Mania guideline: compression check at around 40 h.
• Riding in sand: every 10 h.

Specifications and fitting tips

• Contents: Piston #8299DA, Ring Set #RSV5800, Wrist Pin #WP032, Retaining Clips #CW15
• Bore: 58.00 mm
• Oversize: Standard
• Displacement: 143 cm³
• Stroke: 54.50 mm
• Piston material: Aluminium alloy, Forged
• Pistons feature a high-quality permanent skirt coating to reduce friction and noise and improve performance

Cross-Mania tip: Measure the cylinder bore before ordering: the piston must match your cylinder size. Follow the manufacturer's break-in procedure and replace the top-end gaskets at the same time.

Also needed with this part

• Top-end gasket kit : COMETIC · CENTAURO
• Spark plug : NGK
• 2-stroke oil : LIQUI MOLY 1 L 3065 · LIQUI MOLY 1 L 3063
• Air filter : TWIN AIR over-filter for FANTIC, GAS G… · TWIN AIR GP Sand Stop overfilter for F…

Compatibility

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

Fits:
KTM SX 150 2019
KTM SX 150 2018
KTM SX 150 2017
KTM SX 150 2016