This piston ring kit is an oversize OS 0.25 solution built for LT-series quad engines, covering model years 1985–2009. It renews the ring set to restore compression, reduce oil consumption, and bring back smooth, reliable power for trail and farm use. Designed as a robust aftermarket replacement, it aligns with the LT230/LT-F250 family’s wear patterns to keep engines running strong between overhauls.

Over time, worn compression rings lose sealing capability and oil rings struggle to control oil when bores glaze, leading to reduced power and higher oil consumption. This OS 0.25 kit is engineered to restore proper bore-to-ring clearance after cylinder wear, delivering dependable compression and smoother operation across LT-F250 and related quad lines. It’s a practical, durable choice for riders and operators who need dependable performance without waiting for an OEM rebuild.

Comprehensive Vehicle Fitment

Product Specifications

OEM & Aftermarket Cross-Reference Information

What’s Included

A complete piston ring set designed for the Suzuki LT-series engines listed above. The box contains:

• 2 x Compression Rings
• 2 x Oil Rings

Note: Piston, piston pin, circlips, and gaskets are not included in this kit.

Why Choose This Aftermarket Replacement?

• Direct-Fit Compatibility: Precisely matched OS 0.25 to restore bore-to-ring clearance on LT230/LT-F250 family engines.
• OEM Cross-Reference: References align with Suzuki OEM standards for reliable replacement planning.
• Premium Materials: High-grade alloy steel with wear-resistant faces for durability under rugged use.
• Precision Engineering: Oversize +0.25 mm designed to reestablish proper sealing on worn bores.
• Performance Restoration: Reclaims compression and reduces oil consumption for better power delivery.
• Trail/Farm Ready: Built to endure the demanding conditions of backcountry trails and agricultural tasks.

Installation Notes:

• Inspect the cylinder bore for wear; if excess wear is present, consider honing or re-boring to the OS 0.25 specification before installing the rings.
• Clean the bore and ensure all debris is removed prior to installation to prevent ring scoring or seating issues.
• Lubricate all rings and the piston with assembly lubricant or engine oil during installation to reduce friction on initial startup.
• Install the rings in the correct order and orientation; stagger the end gaps around the circumference to promote even sealing.
• Use a proper ring compressor and no twisting or bending of rings during seating to avoid micro-cracks or deformation.
• Follow the service manual for any fastener torque specs and the recommended break-in procedure after assembly.

Why Upgrade?

Running worn piston rings allows blow-by, reduced compression, and higher oil consumption, which diminishes power and reliability. This OS 0.25 kit restores bore-to-ring clearance, revives compression, and stabilizes oil control, delivering reliablePerformance for the LT-series engines across years and models.