SRP Pistons 139506 Forged Flat Top 4.280 Bore

SRP Pistons, BBC 489, Bore 4.280, Stroke 4.250, Rod Length 6.135, Flat Top -3.0cc, 568 Grams, Set of 8

$734.99

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⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

Description

SRP Professional pistons are the most advanced lightweight FSR forging that offers superior strength. SRP pistons are up to 20% lighter than traditional equivalent pistons. High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation. Accumulator grooves for improved ring seal. Designed for normally aspirated or moderate forced induction nitrous engine applications. SRP professional pistons come standard with high-performance skirt coating and low drag performance piston rings.

Ring land and crown thickness specifically engineered for mild turbo, supercharged, and nitrous applications.

Forced pin oiler for increased wrist pin lubrication

CNC machined domes with radiused valve reliefs provide optimum flame travel

Pin fitting and double spiro locks (#990-042-CS) included

990-2930-15-51S wrist pins (150 grams) included.

CNC Machined ring grooves accept 1/16, 1/16, 3/16mm rings (Rings Sold Separately)

Pin upgrade available

Compression Ratio:

112cc 9.0:1

118cc 8.6:1

124cc 8.3:1

Specifications

More Information
CNC Part Number	SRP-139506
Price	$734.99
Manufacturer's Part Number	139506
Brands	SRP
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chevy BB
Bore Size	4.280
Crankshaft Stroke	4.250
Rod Length	6.135
Piston Type	Flat Top
Compression Height	1.520
Piston Material	4032 Forged
Piston Ring Size	1/16 1/16 3/16
Wrist Pin Size	0.990
Custom Notices	⚠ PROP 65 WARNING

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