Wiseco K0171X3 Ford 302/351 Windsor -9cc Flat Top Forged Piston Set Inline Valve TFS High Port

The Wiseco K0171X3 is a Professional Series forged flat top piston set designed for Ford 302/351 Windsor small block engines equipped with inline valve cylinder heads, including TFS High Port, AFR, DART, Brodix Track 1, Canfield, Ford Racing Z304, Performer, Victor Jr, Profiler, Stock, GT40, and GT40X head combinations.

Forged from 2618 high-strength aluminum alloy and finished with Wiseco's proprietary ArmorGlide skirt coating, these pistons deliver superior seizure resistance, reduced friction, and quieter operation compared to uncoated alternatives. The flat top crown features a -9cc dish volume with dedicated .350"/.250" valve pockets and a .300"-.260" top land, providing optimized clearance for inline valve head configurations.

Key Specifications:

• Crown: -9cc Flat Top
• Valve Pockets: .350" / .250"
• Top Land: .300" - .260"
• Compression Height: 1.165"
• Stroke: 3.250"
• Rod Length: 5.400"
• Deck Height: 8.2"
• Wrist Pin: S424 — .927" x 2.500" (included)
• Skirt Type: Strutted
• Ring Pack: Premium 1.2mm / 1.2mm / 3.0mm GFX rings included
• Material: Forged 2618 high-strength aluminum alloy
• Skirt Coating: ArmorGlide (seizure resistant, friction reducing)

Key Features:

• Anti-detonation groove and pressure seal ring grooves for improved ring seal
• Dedicated valve pocket geometry engineered for inline valve cylinder heads
• Strutted skirt design for maximum strength and minimal piston rock
• Precision CNC-machined crown and ring grooves
• Forged and machined in the USA at Wiseco's Mentor, Ohio facility

Wiseco's Professional Series piston kits are engineered and built for heavy to severe duty performance applications, making the K0171X3 an ideal choice for high-performance street, strip, and race Ford small block builds using inline valve aftermarket cylinder heads.