Skunk2 Tuner Series Honda/Acura (B16A/ B17A/ B18C) DOHC VTEC Alpha Valve Spring Set (Dual Springs)
Skunk2 Tuner Series Honda/Acura (B16A/ B17A/ B18C) DOHC VTEC Alpha Valve Spring Set (Dual Springs)
Description
Valve Spring Kit
Skunk2 Alpha Valve Spring set of 16 for B VTEC
Additional Information
Alpha Series Valve Spring Set; Seat Pressure 68 Lbs At 1.320 in.; Open Pressure 210 Lbs At 0.820 in.; Coil Bind 0.800 in.; Set of 16;
Product Overview
Skunk2 is proud to introduce its Alpha Valve Spring and Titanium Retainer Kits for Honda’s B-series VTEC and K-series engines. Each kit includes Skunk2’s high-quality dual valve springs and race-proven titanium retainers that are the result of nearly two decades of racing and engine building experience.
Each Alpha Valve Spring is manufactured exclusively from super-clean, chrome-silicone wire milled in Japan. By using inner and outer springs mated together through a slight interference fit and with differing frequencies, Alpha Valve Springs are able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm.
Skunk2’s industry-leading Alpha Titanium Retainers are designed to significantly reduce valvetrain mass, resulting in more horsepower and improved valvetrain stability. Similar to Skunk2’s already popular Pro Series Titanium Retainers, Alpha Titanium Retainers feature radius-cut edges for additional rocker arm clearance and reduced weight, strategically positioned lightening grooves, and reduced overall heights for better valve seal clearance and even further weight reduction.
Alpha Titanium Retainers are manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) to ensure that each is optimized for strength as well as for reduced weight. Skunk2 engineers then test and prove their designs on the engine dyno as well as the race track. Once approved for manufacturing, only medical-grade titanium that’s been ultrasonically inspected and certified is used. Following CNC machining, each retainer is then individually inspected to ensure proper hole diameter, taper, and that each are free from machining defects to ensure proper installed valve spring heights and pressures. Finally, each retainer is serialized for your protection, including valuable information, like material batch specifics as well as production and inspection dates.
Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.
*NOTE: Skunk2 Alpha Series Valve Spring & Ti Retainer Kit are sold as complete kits, as a set of springs OR as a set of retainers. Please read the Notes on each item before completing your purchase.*
| Additional Application Notes | |
|---|---|
| • Seat Pressure 68 Lbs At 1.320 in.; Open Pressure 210 Lbs At 0.820 in.; Coil Bind 0.800 in.; Set of 16 | |
These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 09:20:15
Features
- Coil Bind 0.800 in.
- Manufactured From Super-Clean Chrome-Silicone Wire
- Open Pressure 210 lbs. At 0.820 in.
- Prevents Valve Float/Maintain Valvetrain Stability +10000rpm
- Seat Pressure 68 lbs. At 1.320 in.
- Set of 16
Vehicle Compatibility and Return Conditions.
This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.
Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.
Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Camshaft Type: | Hydraulic |
| Coil Bind Height (in): | 0.800 |
| Coil Bind Height: | 0.800 in. |
| Description: | Alpha Series Valve Spring Set |
| Inside Diameter: | OEM |
| Installed Height (in): | 1.320 |
| Installed Height: | 1.320 in. |
| Installed Pressure (lbs.): | 68 |
| Installed Pressure: | 68 lbs. |
| Open Height (in): | 0.820 |
| Open Height: | 0.820 in. |
| Open Pressure (lbs.): | 210 |
| Outside Diameter: | 1.250 in. |
| Part Number: | skk311-05-1350 |
| Spring Type: | Double |
| Tubing Length: | 210 |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Skunk2 Racing, Skunk 2 |
| StreetFX SKU | skk311-05-1350 |
| SFX Item ID | 4442160 |
| Accounting SKU | skk-311-05-1350 |
| Manufacturer SKU | 311-05-1350 |
| Manufacturer UPC | 873265001170 |
| Alternative References | 311-05-1350, SK2-311-05-1350 |
Valvetrain, Alpha Series Valve Spring Set 90-01 Acura Integra GS-R B-Series
Skunk2 Racing Alpha valve springs are manufactured exclusively from super-clean, chrome-silicone wire milled in Japan. They can prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm. They are tested to ensure exceptional performance, reliability, and quality. Choose a set designed for your vehicle.
| Product Attributes | |
|---|---|
| UPC | 873265001170 |
| Brand | Skunk 2 |
| Quantity | Sold as a set of 16. |
| Part Type | Valve Springs |
| Product Line | Skunk2 Racing Alpha Valve Springs |
| Locks Included | No |
| Retainers Included | No |
| Valve Spring Style | Standard |
| Valve Springs Coated | No |
| Coil Bind Height (in.) | 0.800 in. |
| Damper Spring Included | No |
| Valve Stem Seals Included | No |
| Manufacturer's Part Number | 311-05-1350 |
| Number of Springs Per Valve | Dual |
Compatibility
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