![K2-6847-4065C FX-Series Dome Top Piston Set for 2005-19 Small Block Mopar Hemi Gen-III, 4.065 in. Bore, +4cc Volume [OEM Stroke]](https://www.jegs.com/images/mini_750/900/915/915-k268474065c.jpg)
K2-6847-4065C FX-Series Dome Top Piston Set for 2005-19 Small Block Mopar Hemi Gen-III, 4.065 in. Bore, +4cc Volume [OEM Stroke]
DSS Racing K2-6847-4065C 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.
- 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
- Heavy-Duty Piston Pins
- Double True Arc Pin Locks, Provide Redundancy
- Precision CNC Finished Pin Bores
- Drilled Forced Wrist Pin Oiling
- Drilled Bottom Ring Land Intersecting Oil Drain Backs
- Advanced Profile Precision Diamond-Turned Skirts
- Ring Set Required: RS-XP600-4065
- Ring Series: XP600
- Fits Base Engine: 392 - 6.4
- Compression Ratio: 65cc-12.38, 74cc-11.07, 85cc-9.83
- Calculated Zero Deck: 9.27
- Compression Height: 1.21 in.
- Rod Length: 6.2 in.
- Stroke: 3.72 in. (OEM Stroke)
- Pin Locking Rings Included: Yes
- Wrist Pin Included: Yes
- Oil Rail Support Ring Included: N/A
- With Rings Without Rings: With Rings
- Total Valve Reliefs: 2
High-Performance FX2 Forged Piston and Ring Sets
DSS FX-Series premium aircraft-quality 2618 alloy piston sets with corresponding piston rings 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.