Description
SRP Professional pistons combine forged piston durability with modern performance technology for an extremely capable forged piston kit that doesn’t break the bank. Forged from 4032 aluminum, SPR Pro pistons experience minimal thermal expansion, making them perfect for a high-performance, reliable engine build from the track to the drag strip. All SRP Pro pistons include premium ring sets, wrist pins and locks. As with all JE Pistons products, SRP pistons are made 100% in the USA.
- Forged in the USA using 4032 aluminum, yielding tensile strength and minimal thermal expansion
- Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
- Low-friction skirt coating reduces wear and reduces operating noise while optimizing performance
- Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
- Accumulator groove helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent power
- Made 100% in the USA
403 c.i., 4.005″ bore, 4.000″ stroke, 6.125″ rod length, -5.0cc dome volume
This piston set is ideal for oval track to street/strip applications, it is forged from high silicon 4032 aluminium alloy. Features include Advanced, lightweight FSR forging that eliminates stress concentrations for superior strength and forced pin oiling. Included Piston Ring set (1.2, 1.5, 3.0mm).
Includes:
- Wire Lock: 927-073-MW
- Straight Wall Pin: 927-2250-15-51C(106g)
Specifications:
- Part #: SRP279585
- CID: 403
- Bore: 4.005
- Stroke: 4.000
- Rod Length: 6.125
- Compression Height: 1.115
- Compression Ratio with 64cc chamber volume: 11.6
- Compression Ratio with 66cc chamber volume: 11.3
- Compression Ratio with 72cc chamber volume: 10.6
- Dome Volume: -5c
- Gram Weight: 385
- 0.005
- Ring Set: JG3108-4000-7
SRP Pistons was founded in 1997 by JE Pistons, the world’s largest manufacturer of forged racing pistons. The idea was simple, to create a high quality forged piston at an affordable price. Every SRP forging was created with quality, performance and affordability in mind. By designing dedicated forgings, the pistons became both lighter and stronger while machining time and scrap aluminium were drastically reduced. These factors have reduced the price of SRP Pistons and contributed to their success. Today, over 400 different piston part numbers comprise the SRP product line-up, including Chevy, Ford, Chrysler, Honda and more.
and more.
| Product Type | Engine Piston Kit |
|---|---|
| Piston Series | SRP Pro 4032 |
| Cylinder Head | LSX/L92 12 DEG |
| Bore Diameter | 4.005 IN |
| Piston Head Type | Flat |
| Compression Height | 1.110 IN |
| Piston Volume | -5.00 CC |
| Piston Material | 4032 |
| Forging Type | FSR |
| Piston Average Weight | 385 GR |
| Ring Set Included | Yes |
| Top Compression Ring Thickness | 0.0480 IN |
| Second Compression Ring Thickness | 0.0600 IN |
| Oil Ring Thickness | 0.149 IN |
| Wrist Pin Material | 5115 Low Carbon Steel, Case Hardened |
| Wrist Pin Length | 2.250 IN |
| Wrist Pin Wall Thickness | 0.150 IN |




