Wossner 8094D100 Piston Kit - Polaris Trail Blazer Trail Boss Scrambler 250 +1.00mm Oversize

Wossner 8094D100 Standard Series Forged 2-Stroke Piston Kit - +1.00mm Oversize

Extend the life of your Polaris ATV with the Wossner 8094D100 Piston Kit. Engineered specifically for the classic Polaris 250cc 2-stroke engines found in the Trail Blazer, Trail Boss, and Scrambler models, this +1.00mm oversize forged kit is the professional choice for cylinders that require significant boring to remove deep scoring or heavy wear. At Moto-House MX, we know these machines are built to last; upgrading to a Wossner forged piston provides superior structural integrity compared to stock cast pistons, ensuring your ATV remains reliable on the farm or the trail.

The 8094D100 features a dual-ring configuration, designed to provide maximum heat transfer and a consistent compression seal for utility and recreational riding. This setup is ideal for air-cooled and liquid-cooled 250cc Polaris engines that operate under heavy loads. To ensure a quiet, smooth-running engine, Wossner applies a permanent molybdenum disulphide skirt coating that reduces friction and prevents piston rock. Precision-machined for a 73.00mm finished bore, this 72.93mm piston kit is the ultimate way to refresh your high-hour Polaris engine.

Top Features: Wossner 8094D100 Piston Kit

• +1.00mm Oversize (72.93mm): Designed for cylinders that need to be bored out to a 73.00mm finished size to restore a perfect, round bore.
• Dual Ring Configuration: Enhances cooling and provides a more durable compression seal, perfect for the demands of off-road ATV use.
• Aerospace-Grade Forging: Offers significantly higher strength and heat resistance than traditional cast pistons, reducing the risk of failure.
• Low-Friction Skirt Coating: Permanent skirt treatment minimizes drag, protects the cylinder walls, and ensures a smoother break-in period.
• Optimized Machining: Precisely engineered to balance lightness with the necessary strength in the crown and skirt wall cross-sections.
• Complete Kit: Includes the high-performance forged +1.00mm piston, rings, wrist pin, and circlips.

Expert Pro-Tip: Moving to a +1.00mm oversize is a great way to save a cylinder that has seen heavy use. It is critical that your cylinder is precision-bored and honed by a professional machine shop to exactly 73.00mm to achieve the correct piston-to-wall clearance. For a professional-grade rebuild, always install with a fresh top-end gasket kit and utilize premium 2-stroke oil to protect your new forged assembly during the initial break-in cycles.

Fitment List

Year Range	Vehicle Brand	Vehicle Model
1990-2005	Polaris	Trail Blazer 250 / ES / Freedom
1985-1999	Polaris	Trail Boss 250 / 2x4 / 4x4 / ES / R
1985-1986	Polaris	Scrambler 250 / 250R ES

Frequently Asked Questions

Q: When should I use a +1.00mm oversize piston?
A: This piston is used when your cylinder bore has damage or wear that cannot be cleaned up by a smaller oversize (like +0.50mm). It allows you to bore the cylinder to 73.00mm and restore like-new performance.

Q: Are forged pistons better for older Polaris ATVs?
A: Absolutely. Forged pistons are much stronger and more resistant to heat-induced fatigue than cast pistons, making them an excellent choice for air-cooled engines or utility machines that work hard.

Q: Does this kit include everything I need?
A: The kit includes the forged piston, dual rings, wrist pin, and circlips. We highly recommend purchasing a new small-end needle bearing and a top-end gasket set separately to ensure a complete and reliable rebuild.

Recommended Pairings

• Complete Top End Gasket Set: Vital for ensuring a leak-free seal and proper engine operation.
• High-Performance 2-Stroke Lubricant: Keep your new oversize forged piston protected under high-heat conditions.

Restore your machine’s power and precision today. Buy now at Moto-House MX!

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The Best Motocross/UTV & ATV Shop in Central Florida. Stop by our local store in Montverde, FL or enjoy lightning-fast shipping across the USA.