![K2-6020-4155D FX-Series Flat Top Piston Set for 1965-1981 Big Block Oldsmobile, 4.155 in. Bore, -12cc Volume [OEM Stroke]](https://www.jegs.com/images/mini_750/900/915/915-k2-6020-4155.jpg)
DSS RACINGPART NUMBER: 915-K2-6020-4155
K2-6020-4155D FX-Series Flat Top Piston Set for 1965-1981 Big Block Oldsmobile, 4.155 in. Bore, -12cc Volume [OEM Stroke]
$86495
Oldsmobile
FX-Series Flat Top Piston Set1965-1981 Big Block Oldsmobile Bore: 4.155 in. Head Volume: -12cc Material: Forged 2618 Pin Diameter: .980 in. Pin Style: Press or Full Float Ring Thickness: 1/16-1/16-3/16 in. OEM Stroke Set of 8
DSS Racing K2-6020-4155D 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-DM400-4155
- Ring Series: DM400
- Fits Base Engine: 425
- Compression Ratio: 72cc-10.51, 75cc-10.21, 77cc-10.02
- Calculated Zero Deck: 10.6125
- Compression Height: 1.625 in.
- Rod Length: 7 in.
- Stroke: 3.975 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
Part TypePiston
BrandDSS RACING
Package Height10.0
Package Width10.0
Package Length10.0
Weight17.0 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part NumberK2-6020-4155
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
Some parts are not legal for use in California or other states with similar laws / regulations
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)







![Engine Piston Ring Filer with Abrasive Wheel [Hand Crank]](https://www.jegs.com/images/mini_200/700/778/778-66785.jpg)



![Break-In Oil, 10W30 [1 Quart, 32 oz.]](https://www.jegs.com/images/mini_200/500/555/555-28067.jpg)


![Mechanic Chair & Step Stool on Wheels [300 lb. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-81156.jpg)
