The Namura NA-30050-BK Top End Kit is designed for select Suzuki Vinson 500 4x4 applications and includes the essential components needed for a top-end rebuild. The kit includes a piston, piston rings, wrist pin, retaining clips, top-end bearing, and gasket kit. With an 87.46 mm piston size and 11:1 compression ratio, this kit is engineered for dependable replacement performance in compatible Suzuki ATV engines.
The piston features MOS2, or Teflon and molybdenum, coated skirts. This rolled-on coating process creates a durable bond while helping reduce friction, improve heat transfer, and minimize the risk of cold seizures. Machined smooth heads help reflect combustion heat and reduce carbon buildup, supporting piston protection and consistent engine operation. Anodized domes provide increased heat resistance and durability for demanding riding conditions.
Namura uses a hypereutectic casting process to provide increased silicon content, controlled expansion, and improved wear resistance. This construction helps the piston withstand elevated cylinder temperatures while maintaining reliable service performance. The kit is intended for compatible Suzuki Vinson models equipped with the specified engine configuration and should be matched against the vehicle application before installation.
Fitment includes 2002–2007 Suzuki LT-A500F Vinson 500 4x4 Auto models with SRA, plus 2003–2006 Suzuki LT-F500F Vinson 500 4x4 models with SRA. The manufacturer part number is NA-30050-BK, and the vendor part number is 186-3050B. Verify the model year, engine configuration, and existing cylinder specifications before ordering.
Features:
- Complete top-end kit includes piston, rings, wrist pin, retaining clips, top-end bearing, and gasket kit
- 87.46 mm piston size with 11:1 compression ratio for compatible Suzuki Vinson 500 applications
- MOS2 Teflon and molybdenum coated skirts help reduce friction, improve heat transfer, and minimize cold-seizure risk
- Machined smooth piston head helps reflect combustion heat and reduce carbon buildup
- Anodized dome improves heat resistance and piston durability
- Hypereutectic casting process provides controlled expansion and increased wear resistance
- Fits 2002–2007 Suzuki LT-A500F Vinson 500 4x4 Auto models with SRA
- Fits 2003–2006 Suzuki LT-F500F Vinson 500 4x4 models with SRA
- Brand: Namura; Manufacturer part number: NA-30050-BK; Vendor part number: 186-3050B
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]