Restore the top-end performance of your Suzuki ATV with the NAMURA NA-30050K Top End Kit. Designed for the standard-bore 87.45 mm cylinder configuration and 11:1 compression ratio, this kit includes the essential components needed for a reliable top-end rebuild: piston, piston rings, wrist pin, wrist pin clips, top-end bearing, and gasket kit. It is engineered for direct fitment on select Suzuki Vinson 500 models from 2002 through 2007.
The NAMURA piston uses a hypereutectic casting process to increase silicon content, helping reduce expansion while improving wear resistance and durability under elevated cylinder temperatures. Its MOS2, or Teflon/molybdenum, coated skirts use a rolled-on application process designed to create a stronger bond than conventional spray-on coatings. This coating helps reduce friction, improve heat transfer, and minimize the risk of cold seizures during operation.
Additional piston features include machined smooth heads that help reflect combustion heat and reduce carbon buildup, along with anodized domes that improve heat resistance and durability. The complete kit is manufactured by NAMURA and supplied under vendor part number NA-30050K. Fitment includes the 2002–2007 Suzuki LT-A500F Vinson 500 4X4 Auto with SRA, plus the 2003–2006 Suzuki LT-F500F Vinson 500 4X4 with SRA. Confirm the model and engine specifications before installation to ensure proper application.
Features:
- Complete Top End Kit: Includes piston, rings, wrist pin, wrist pin clips, top-end bearing, and gasket kit.
- Standard-Bore Fitment: Designed for an 87.45 mm standard-bore cylinder and 11:1 compression ratio.
- MOS2-Coated Skirts: Rolled-on Teflon/molybdenum coating helps reduce friction, improve heat transfer, and minimize cold-seizure risk.
- Machined Smooth Head: Helps reflect combustion heat and reduce carbon buildup on the piston crown.
- Anodized Dome: Improves piston heat resistance and durability.
- Hypereutectic Construction: Higher silicon content helps reduce expansion and increase wear resistance at elevated cylinder temperatures.
- Vehicle Fitment: Fits select 2002–2007 Suzuki LT-A500F Vinson 500 4X4 Auto models with SRA and 2003–2006 Suzuki LT-F500F Vinson 500 4X4 models with SRA.
- Brand and Part Number: NAMURA manufacturer and vendor part number NA-30050K.
Fitment:
2002 Suzuki Lt-A500F Vinson 500 4X4 Auto [SRA]
2003 Suzuki Lt-A500F Vinson 500 4X4 Auto [SRA]
2003 Suzuki Lt-F500F Vinson 500 4X4 [SRA]
2004 Suzuki Lt-A500F Vinson 500 4X4 Auto [SRA]
2004 Suzuki Lt-F500F Vinson 500 4X4 [SRA]
2005 Suzuki Lt-A500F Vinson 500 4X4 Auto [SRA]
2005 Suzuki Lt-F500F Vinson 500 4X4 [SRA]
2006 Suzuki Lt-A500F Vinson 500 4X4 Auto [SRA]
2006 Suzuki Lt-F500F Vinson 500 4X4 [SRA]
2007 Suzuki Lt-A500F Vinson 500 4X4 Auto [SRA]
2007 Suzuki Lt-F500F Vinson 500 4X4 [SRA]