Restore compression and power in your Suzuki LT-F/LTF King Quad 300 with this OS 0.50 oversize piston kit. Precisely engineered for 1991–2003 LT-F300/LTF 300 models, including the LT-F300F King Quad from 1999–2002, this aftermarket replacement delivers dependable power recovery and durable operation when wear has taken a toll on the bore and rings. It’s designed to reestablish proper combustion chamber clearance and throttle response without the premium OEM price tag.

Designed for rugged trail and farm use, this OS 0.50 piston kit tackles common wear-and-tear issues like bore scoring and ring seating loss, delivering reliable compression and consistent power across returning-to-service engines. The kit offers a practical, long-lasting solution for riders and operators who rely on steady performance and predictable starts, even after extended use in demanding conditions.

Comprehensive Vehicle Fitment

Product Specifications

OEM & Aftermarket Cross-Reference Information

What's Included

This piston kit includes the essential components needed to restore compression on the LT-F/LTF 300 family, ready for installation in one return-to-service package.

• Piston
• Piston Rings
• Wrist Pin
• Circlips

Why Choose This Aftermarket Replacement?

• Direct-Fit Compatibility: Precisely matched to the LT-F/LTF 300 bore and clearances for reliable installation without guesswork.
• OEM Cross-Reference Coverage: Includes established OEM part numbers, simplifying verification across model years and variants.
• Premium Materials & Build Quality: Engineered for durability under high-heat, high-load ATV use common on trails and farms.
• Performance Restoration: Restores original compression, throttle response, and fuel efficiency by addressing bore wear and ring seating.
• Cost-Effective Replacement: A practical alternative to OEM pricing while delivering comparable reliability for routine maintenance or return-to-service projects.

Installation Notes:

• Inspect the engine bore; if wear is evident beyond service limits, a controlled oversize bore restoration to +0.50 mm may be required before installing the OS piston kit.
• Verify the oversize specification (0.50 mm) and ensure the piston rings are oriented correctly with proper gaps as per service manual guidelines.
• Lubricate the piston skirt and rings with assembly lubricant before installation to promote smooth seating and ring sealing.
• Install the wrist pin and circlips securely and check for free rotation with the connecting rod to avoid binding.
• Torque the related fasteners to the manufacturer’s specifications only when the kit requires cylinder head or accessory hardware reassembly; follow the LT-F/LTF service manual for exact values.
• Perform a proper break-in period after installation: avoid high RPMs and heavy loads for the first 1–2 hours of operation to allow rings to seat properly.

Why Upgrade?

Running a worn piston kit compromises compression, reduces power, and increases oil blow-by, leading to diminished performance and harder starts. This OS 0.50 replacement restores compression, reclaims lost power, and returns reliable operation essential for trail riding and farm workloads.