Wiseco Piston Kit — 84.00 mm — Polaris 400 ATV

Kit Includes:

• 1x Piston

• 1x Ring Set #3307TD

• 1x Wrist Pin #S278

• 2x Circlips #CW18

• Forged from high-silicon aluminum alloy for maximum strength and dependability
• Wiseco offers a complete range of popular piston models and years for both trail and racing applications
• Durability, longevity and increased horsepower
• Innovative forging design and piston skirt provide maximum horsepower and torque
• Features forged pistons, rings, wrist pins, and circlips
• These high-tech piston designs offer maximum compression ratios, ultra-stiff strutted forgings, and titanium nitride-coated rings, which all add up to more power that is sustained longer
• Each piston is E-Coated on the crown, ring grooves, and pin bore, for maximum wear resistance and protection from micro-welding, galling, and detonation
• GP Series parts generally have less machining on the outside, which helps seal up the bore for increased compression
• Additionally, boost ports are removed for a more predictable powerband and increased pull on the top end
• Cylinder sleeves must be purchased separately.
• Service intervals may be increased with Racer's Choice pistons over conventional Wiseco pistons, and are for expert racers and tuners only.

Units

Kit

Model

Forged Series

Piston Material

Forged, 4032 Aluminum Alloy

Bore - Oversize

+1.00 mm, +1,00 mm

Compression Ratio

Stock

Riding Style

ATV

Skirt Coating

Non-Coated

Stroke Length

70,00 mm, 70.00 mm

Displacement

400 cc

Engine Type

2-Stroke

Bore Size

84.00 mm

Piston Diameter

83.92 mm

Shipping weight

1.02 lb

Package size

3.9 × 3.6 × 3.4 in

Country of origin

USA

Salto part #

675M08400

Wiseco part #

675M08400

In stock at a distributor warehouse. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is re-checked with the warehouse before your card is charged.

Is it in stock?

Yes — the distributor shows it on a shelf at a regional warehouse right now. We check again the moment you order, before anything is charged.

How fast will it get to me?

Usually 2–4 business days by ground.

Will it fit my machine?

The distributor lists it for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.

Is this genuine Wiseco?

Yes. It ships new from the same distributors the big online stores buy from — Wiseco part #675M08400.