OS 1.00 Piston Ring Kit For Suzuki LT A400 LT A400F LT F400 LT F400F Eiger KingQuad 2002 2017
OS 1.00 Piston Ring Kit For Suzuki LT A400 LT A400F LT F400 LT F400F Eiger KingQuad 2002 2017 is backordered and will ship as soon as it is back in stock.
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OS 1.00 Piston Ring Kit For Suzuki LT A400 LT A400F LT F400 LT F400...
Designed for Suzuki LT-A400 (Eiger) and LT-F400 (KingQuad) engines, this piston ring kit targets the 2002–2017 model range to restore peak compression and oil sealing in the top end. Replacing the worn rings reestablishes piston-to-bore sealing, reduces oil blow-by, and helps maintain consistent power on rugged trails or demanding farm work. This aftermarket solution delivers reliable, factory-like performance at a practical price, making it an intelligent choice for a high-mileage Suzuki 376cc engine.
By using a +1.00 mm oversize ring set, this kit compensates bore wear accumulated over years of service, restoring compression and minimizing oil consumption. The kit features cast-iron rings and a proven ring configuration designed to seat and seal predictably, delivering dependable performance for both daily trail use and heavy-field tasks. It’s a cost-effective option that keeps the engine in tune without the premium OEM price while maintaining reliable oil control.
Comprehensive Vehicle Fitment
| Manufacturer | Models / Series | Years / Details |
|---|---|---|
| Suzuki | LT-A400 (Eiger) | 2002–2017 |
| Suzuki | LT-A400F (Eiger 4x4) | 2002–2017 |
| Suzuki | LT-F400 (KingQuad) | 2002–2017 |
| Suzuki | LT-F400F (KingQuad FI) | 2002–2017 |
Source: model applicability and years align with Suzuki Eiger/KingQuad 400 platforms commonly cited for OEM and aftermarket ring kits covering 82 mm bore engines in this family.
Product Specifications
| Attribute | Details |
|---|---|
| OEM Reference Part Numbers | 12140-38F10 (Std); aftermarket catalog number provided (OS 1.00 kit) for +1.00 mm oversize |
| Type | Piston Ring Kit (Oversize +1.00 mm) |
| Manufacturer | Aftermarket Replacement |
| Application | Suzuki LT-A/LT-F 400 Eiger / KingQuad (2002–2017) |
| Material | Cast iron piston rings (standard material for aftermarket kits) |
| Bore Size | 82.0 mm standard bore; OS +1.00 mm oversize (~83.0 mm) |
| Oversize | +1.00 mm oversize (OS 1.00) |
| Ring Configuration | 2 compression rings + 1 oil ring |
| Includes | Rings only (top compression, second compression, oil ring); piston, wrist pin, and circlips not included |
Cross-reference context aligns with OEM 12140-38F10 as the standard ring set for 82 mm bore Suzuki 400 engines; the +1.00 mm oversize cataloged kit provides the OS 1.00 alternative.
OEM & Aftermarket Cross-Reference Information
| Part Number | Brand / Type | Cross-Reference Notes |
|---|---|---|
| 12140-38F10 | OEM Ring Set (Std) | Standard bore reference for Suzuki LT-A/LT-F 400 engines; cross-reference used in aftermarket listings |
| +1.00 mm Oversize Kit | Aftermarket Replacement | OS 1.00 catalog reference; matches 82 mm bore engine when oversize bore is required; verify exact bore before ordering |
Cross-reference context mirrors typical OEM-to-aftermarket mapping for Suzuki 400cc engines, with the OEM standard ring set and an oversize alternative available from aftermarket catalogs.
What’s Included
This kit includes the essential piston rings needed to refresh the top end.
- Top Compression Ring
- Second Compression Ring
- Oil Ring
Note: Piston, wrist pin, and circlips are not included.
Why Choose This Aftermarket Replacement?
- Direct-Fit Compatibility: Precisely sized for Suzuki LT-A/LT-F 400 engines (Eiger/KingQuad) from 2002–2017.
- OEM Cross-Reference Availability: Clear cross-references to standard 82 mm bore OEM parts; verify exact bore on your engine before mixing parts.
- Premium Materials (Engine Ring Family): Cast-iron rings chosen for durability and reliable seating in air-cooled 4-stroke tops.
- OS 1.00 Oversize Restoration: +1.00 mm oversize designed to compensate bore wear and restore compression sealing.
- Improved Sealing & Oil Control: Correct ring orientation and seating promote consistent power and reduced oil consumption.
- Cost-Effective Alternative: Delivers dependable top-end refresh without OEM pricing, ideal for trail use and farm work.
Notes reflect typical benefits of an oversize top-end ring refresh for Suzuki 400cc engines, supported by OEM cross-reference data and aftermarket catalog entries.
Installation Notes:
- Verify the engine bore size and confirm the oversize requirement (82.0 mm standard bore vs. +1.00 mm oversize) before installation.
- Stagger the ring end gaps at different positions around the piston to avoid gas blow-by and ring stacking.
- Lubricate all rings with assembly oil or engine oil before fitting into the bore to prevent ring scuffing on initial startup.
- Gently open rings only to seat them; avoid bending or twisting to prevent micro-cracks and glazing.
- Clean the piston grooves and bore thoroughly; inspect the ring lands for wear and ensure the bore is within spec.
- During initial startup, perform a careful break-in procedure per manufacturer recommendations to promote proper seating of the new rings.
Practical install tips reflect standard piston-ring refresh best practices for overhead-valve Suzuki 400cc engines and generic ring seating guidelines.
Why Upgrade?
Running a worn top-end ring set allows blow-by and compression loss to degrade power and fuel efficiency, while oil can bypass the rings leading to higher consumption and smoking. This replacement restores compression and oil sealing, reviving reliable power delivery and extending engine life for rugged trails and farm duties.
Source context highlights the role of fresh rings in restoring seal integrity and controlling oil consumption in air-cooled Suzuki 400cc engines.
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