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JE ULTRA -17.4cc Dish Pistons (4.000 Stroke, 6.125 Rod, 4.125 Bore) 361731
JE ULTRA -17.4cc Dish Pistons (4.000 Stroke, 6.125 Rod, 4.125 Bore) 361731
Sale
Product Code: 361731
Availability: Pre-Order
Availability: Pre-Order
$1,274.47 $1,348.64
Our brand new Asymmetrical FSR (Forged Side Relief) forging design allows for the use of the most popular stroke and rod combinations while eliminating reluctor wheel clearance problems. Asymmetrical forging design maintains a larger skirt on the heavily stressed major thrust side, while reducing friction with a smaller skirt on the minor thrust side. The result is a high strength, lightweight piston that significantly reduces friction in your engine. Lightweight and extremely durable, these pistons are machined for 1.2mm, 1.5mm, 3.0mm rings.
Ultra Series Includes:
Grain Flow Optimized Forging
Lateral Gas Ports
Ceramic Crown Coating
Perfect Skirt Coating
Accumulator Groove
Double Forced Pin Oiling
Upgraded 9310 Pins and locks
Rings Sold Separately - Option to add JG31F8-4125-2 +$150 (4.125+2 Bore, File Fit, 1.2, 1.5, 3mm Ring Pak, Low Tension Oil Rings)
| Bore Size | 4.125 |
| Crankshaft Stroke | 4.000 |
| Rod Length | 6.125 |
| Piston Type | -17.4cc Dish |
| Compression Height | 1.115 |
| Piston Material | 2618 Forged |
| Piston Ring Size | > 1.2mm, 1.5mm, 3mm Rings (NOT Included) > Oil Rail Supports are Included |
| Wrist Pin Size | .927 Pins |
| Valve Pocket | Combination 12 degree (LS7 only) and 15 degree Valve Pockets |
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