![3-2465-4165 FX-Series Dish Top Piston Set for 1955-2004 Small Block Chevy, 4.165 in. Bore, -21cc Volume [Stroker]](https://www.jegs.com/images/mini_750/900/915/915-3-2465-4165.jpg)
3-2465-4165 FX-Series Dish Top Piston Set for 1955-2004 Small Block Chevy, 4.165 in. Bore, -21cc Volume [Stroker]
DSS Racing 3-2465-4165 Features:
- Strong, Heat Resistant 2618 Alloy
- Proprietary "DMAX" Multi Stage Forging Process, Produces' a Superior Forging
- Patented "X Groove" Skirt for Superior Cylinder & Ring Performance & Durability
- Advanced Ring Lands Featuring a Combination of Accumulators and Drilling Ops.
- Ten top Land Horizontal Gas Ports For the Ultimate In Ring seal and Performance
- 6 additional areas of CNC milling for weight reduction in non critical areas.
- Thinner Ring Grooves Maximize Critical Ring Land Strength
- Larger CNC Machined Valve Reliefs for More Aggressive Head & Cam Combinations
- DSS XR Heavy Wall Piston Pins
- Precision CNC Finished Pin Bores
- Double Spiro lock Pin Locks, Provide Redundancy
- Drilled Forced Wrist Pin Oiling
- Drilled Bottom Ring Land Intersecting Oil Drain Backs
- Advanced Profile Precision Diamond-Turned Skirts
- Ring Set Required: RS-XP600-4165
- Ring Series: XP600
- Fits Base Engine: 396
- Cylinder Head Style: 23-Degree
- Compression Ratio: 58cc-10.83, 64cc-10.20, 70cc-9.65
- Calculated Zero Deck: 8.9995
- Compression Height: 1.062 in.
- Rod Length: 6 in.
- Stroke: 3.875 in. (Stroker)
- Pin Locking Rings Included: Yes
- Wrist Pin Included: Yes
- Oil Rail Support Ring Included: Required
- With Rings Without Rings: Without Rings
- Total Valve Reliefs: 2
Extreme-Performance Forged Pistons w/XR Wrist Pins
DSS FX3-Series premium aircraft-quality 2618 alloy pistons with XR wrist pins are forged and machined to perfection with internal gussets that provide added strength to withstand the demands of today's high-performance naturally aspirated, nitrous, or boosted engines. CNC milling removes non-critical material, resulting in a lighter weight and ideal balance of power, strength, and longevity. The DSS FX-Series piston patented X-Groove skirt design reduces damage caused by fuel washdown and break-in debris for superior skirt, cylinder, and ring life. This advanced skirt design is ideal in stroker engines and will improve piston stability and ring seal, resulting in quieter operation.