OS end-gap piston ring kit designed for the 300 OS engines across KEF, KLF, and KVF platforms from 1985 through 2004. This OS 1.00 end-gap kit restores compression and minimizes oil loss, delivering solid, reliable power for trail rides, ranch work, and demanding job-site use. It’s a cost-conscious aftermarket replacement that mirrors factory specifications to keep the engine performing like new. The kit targets common wear points in the 300 OS lineup—ring lands, blow-by, and oil control issues—so you can trust consistent sealing and predictable compression across your next ride or shift. With a three-ring design (two compression rings plus one oil ring) and a precise OS 1.00 end-gap, this kit is engineered to maintain seal geometry under the vibration and high-load conditions typical of rugged terrain. The rings use a standard piston ring alloy suitable for the harsh environment of 2- and 4-stroke highway, trail, and farm work, delivering durable performance and repeatable results. Built to Kawasaki specifications, this aftermarket set offers a reliable alternative when OEM pricing isn’t desirable, without sacrificing fit or function.

Comprehensive Vehicle Fitment

Manufacturer	Models / Series	Years / Details
Kawasaki	KLF Bayou 300 (KLF300)	1986–2004
Kawasaki	KEF Lakota 300 (KEF300) / Lakota Sport	1995–2003
Kawasaki	KVF Prairie 300 (KVF300)	1999–2002
Kawasaki	Bayou 300 variants (KLF300 family)	1989–2004 (and related variants into early 2000s)
Kawasaki	Lakota Sport / Lakota lineage	1995–2003
Kawasaki	KVF Prairie 300 variants	1999–2002

Product Specifications

Attribute	Details
OEM Reference Part Numbers	13024-1080
Type	Piston Ring Kit (OS 1.00 end-gap)
Manufacturer	Aftermarket Replacement
Application	Kawasaki 300 OS engines: KEF/KLF/KVF 300, 1985–2004
Material	Standard piston ring alloy (high-grade steel/cast-iron blend typical for OS ring sets)
End Gap	OS 1.00 mm
Ring Configuration	2 x compression rings + 1 x oil ring (3-ring set)
Bore Compatibility	Approx. 77.0 mm bore (OS 1.00 over standard 76.0 mm)

OEM & Aftermarket Cross-Reference Information

Part Number	Brand / Type	Cross-Reference Notes
13024-1080	Kawasaki OEM	Original piston ring set with OS end-gap; direct-fit for KEF/KLF/KVF 300 engines
13024-1080	Aftermarket Replacement	Direct-fit OS 1.00 end-gap kit matching OEM specification

What's Included

In the box you’ll find the essential rings matched to the KEF/KLF/KVF 300 OS bore:

• Top compression ring
• Second compression ring
• Oil control ring

Note: This kit includes the rings only. Piston, wrist pin, circlips, and gaskets are not included.

Why Choose This Aftermarket Replacement?

• Direct-Fit Compatibility—Precisely sized OS 1.00 end-gap rings designed for KEF/KLF/KVF 300 models for reliable sealing and repeatable performance.
• OEM Cross-Reference—Matches the OEM 13024-1080 specifications to preserve factory-level compression and power characteristics.
• Premium Materials—Engineered with a high-grade piston ring alloy suited to rugged, vibration-heavy service.
• OS 1.00 End Gap—Maintains correct seal geometry to minimize blow-by and oil burn, restoring original power delivery.
• Performance Restoration—Targeted fix for ring lands, oil scavenging, and compression loss common in aged 300 OS engines.
• Cost-Effective Alternative—Delivering factory-like performance without OEM-part pricing, ideal for trails and farm work.

Installation Notes:

• Measure bore and gap—Confirm the actual bore is around 77.0 mm for OS 1.00 rings and verify end-gap with a feeler gauge before installation.
• Clean bore surfaces—Flush away all carbon and debris; a clean bore ensures consistent ring seating and seal.
• Lubricate rings lightly—Apply clean engine oil to the ring faces and ends before installing to minimize initial wear.
• Align gaps properly—Stack ring gaps so they are offset from the piston pin and each other, typically by at least 0.5–1.0 mm.
• Install in correct orientation—Follow the piston’s ring-groove orientation and land marks to avoid misalignment during startup.
• Check end-gap after seating—Re-check end-gap once the rings are seated and before final torquing or assembly.

Why Upgrade?

Running a worn piston ring set on a 300 OS engine invites compression loss, excessive blow-by, and elevated oil consumption, which dulls throttle response and reduces reliability on tough terrain or job sites. This OS 1.00 end-gap replacement restores sealing integrity and consistent compression, returning power, throttle feel, and oil control to near-original levels.