In warehouse stock

Prox Piston Kit — 76.00 mm — 550F Engine Type — Twin Cylinder — Ski-Doo

Prox · #0910-3291 · Top End / Engine

High-quality cast piston made with dedicated tooling and molding
Made from hypereutectic alloy for extra strength and reduced expansion
Special dual-ring setup for improved durability and resistance to wear
Full MOS2 skirt coating for improved breaking in and resistance to scuffing
Anodized piston dome for increased protection against excessive heat

$105.95

In stock. Ships in 2–4 business days · free shipping over $150.

Questions? Call the shop: 801-361-3010

Real shop · real humans · 1231 N 1300 W Ste A, Centerville, UT 84014

Description & features7 features

High-quality cast piston made with dedicated tooling and molding
Made from hypereutectic alloy for extra strength and reduced expansion
Special dual-ring setup for improved durability and resistance to wear
Full MOS2 skirt coating for improved breaking in and resistance to scuffing
Anodized piston dome for increased protection against excessive heat
Usage of high-quality rings such as Riken for optimum heat transfer and sealing
Kit includes piston, rings, pin, clips and top-end bearing

Specifications12 specs

Bore - Oversize: Standard
Riding Style: Snow
Piston Material: Hypereutectic Alloy
Skirt Coating: Molybdenum Disulphite
Displacement: 550 cc
Units: Kit
Bore Size: 76.00 mm
Engine Type: 2-Stroke
Style: Cast
Shipping weight: 1 lb
Package size: 4.1 × 4.1 × 4 in
Country of origin: USA

Fitment16 models · Ski-Doo

Ski-Doo16 models

Expedition 550F2005
Expedition 550F Sport2006–2008
Freestyle Back Country 550F2007–2008
Freestyle Park 550F2007–2008
Freestyle Session 550F2007
Grand Touring 5502003, 2010–2012
GSX 550 Fan2005–2008
GTX 550 Fan2005–2008
Legend 5502003–2004
MX Z 550 Fan2003–2008
MX Z 550 X2007–2008
Skandic 550F SUV2004–2008
Skandic SWT2004–2008
Skandic Tundra2008
Skandic WT2004–2008
Summit 550 Fan2003–2008

Fitment comes from the distributor’s catalog. Double-check your year, model and trim before you order — or call the counter at 801-361-3010 and we’ll check it with you.

Part numbersOEM cross-reference

Salto part #: 0910-3291
Prox part #: 01.5503.000
Replaces OEM #: 420889050

Shipping

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.

Questions4 answers

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 Prox?: Yes. It ships new from the same distributors the big online stores buy from — Prox part #01.5503.000.