Advanced, lightweight FSR
forging that eliminates
stress concentrations for
superior strength. Stronger
than traditional designs but
up to 20% lighter.
-
Accumulator grooves for
improved ring seal
-
Thick top ring lands to
accommodate moderate forced
induction/nitrous
applications
Rings Included
-
Lightweight, low friction
metric ring package included
- 1.2mm CARBON STEEL
top ring, 1.5mm Napier 2nd
ring, 3.0mm standard tension
oil ring
- Minimal
filing required
Pins & Locks:
- High
quality 2.250” pin
further reduces reciprocating
weight
- Carbon steel
wire locks included
Specifications:
- Engine:
SMALL BLOCK CHEVROLET
-
Bore Diameter: 4.030
-
Compression Height: 1.125
- Compression Ratio with
58cc chamber volume: 10.4
- Compression Ratio with
64cc chamber volume: 9.8
- Compression Ratio with
70cc chamber volume: 9.3
- Piston Volume: -16.0
- Cylinder Head: CHEVROLET
23 DEG 20/30
- Piston
Pin Outside Diameter: 0.927
- Piston Pin Length:
2.250
- Piston Pin
Material: 5115
-
Ringset Included: Yes
-
Top Compression Ring
Thickness: 1.2mm
-
Second Compression Ring
Thickness: 1.5mm
- Oil
Ring Thickness: 3.0mm
-
Piston Material: 4032
-
Forging Type: FSR
-
Piston Avg Weight: 376
- Pin Wall Thickness: 0.150
- Piston Type: Dish
- Ring Set:
JG31F8-4030-2
numbers comprise the SRP
product lineup, including
Chevy, Ford, Chrysler, Honda
and more.