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  3. SUPERTECH SPRK-TS1015-SU5

SUPERTECH SPRK-TS1015-SU5 Dual Valve Springs Retainer Kit 70LBS Sohc

fits model: Ej25, Turbo.

Sprk-ts1015-su5 Supertech 70lbs Dual Valve Springs Ti Retainer Kit For Ej25 Sohc Non-turbo

( Brand: Supertech ), ( Manufacturer Part Number: SPRK-TS1015-SU5 ), ( Part Type: Valve Spring ), ( Engine Codes: For Ej25 None Turbo Sohc ), ( Vehicle Make: For Subaru )

Review SUPERTECH 70lbs Dual Valve Springs Ti Retainer Kit For Sohc Non turbo fits EJ25 TURBO

Introducing the Supertech Sprk-Ts1015-Su5 Dual Valve Springs Retainer Kit, specifically designed for the Subaru EJ25 SOHC non-turbo engine. This high-performance kit is an essential upgrade for those seeking improved engine response, increased power, and enhanced reliability.

The heart of this kit is the dual valve springs, which are manufactured from superior materials. These springs are designed to provide a more consistent and accurate valve seal, ensuring optimal combustion chamber pressure for maximum power output. The dual spring design also offers improved valve control, reducing the likelihood of valve bounce and allowing for more aggressive camshaft profiles.

The retainer kit itself is made from 6061-T6 billet aluminum, ensuring a strong and durable component that can withstand the rigors of high-performance use. The kit includes eight (8) total retainers, four (4) for the intake valves and four (4) for the exhaust valves.

The unique design of the Supertech retainers features a stepped groove that allows for the use of standard or aftermarket valve springs. This flexibility makes the kit a versatile choice for a wide range of applications, from stock builds to high-performance racing setups.

Installation of the Supertech Sprk-Ts1015-Su5 Dual Valve Springs Retainer Kit is a straightforward process. The kit includes all necessary hardware for installation, as well as detailed installation instructions to ensure a trouble-free experience.

In summary, the Supertech Sprk-Ts1015-Su5 Dual Valve Springs Retainer Kit is an excellent choice for anyone looking to maximize the performance potential of their Subaru EJ25 SOHC non-turbo engine. With its high-quality materials, reliable design, and versatile applications, this kit is a must-have for any serious Subaru enthusiast.

Supertech SPRK-TS1015-SU5 70lbs Dual Valve Springs Retainer Kit for EJ25 SOHC Non-Turbo: A Detailed Analysis

The Supertech SPRK-TS1015-SU5 70lbs Dual Valve Springs Retainer Kit is designed for the Subaru EJ25 SOHC non-turbo engine, primarily used in older Subaru models. These upgraded valve springs aim to provide better performance and reliability. In this analysis, we will discuss the potential advantages and disadvantages of investing in these valve springs.

Advantages:

1. Enhanced Performance: The 70lbs dual valve springs offer improved valve control, allowing for better engine response and increased power output.

2. Improved Durability: The high-tensile material used in these springs ensures that they last longer, reducing the need for frequent replacements.

3. Reduced Valve Train Noise: The stiffer valve springs help to reduce valve train noise, making your engine run more quietly and smoothly.

4. Suitability for Performance Modifications: These valve springs are an excellent choice for those planning performance modifications on their Subaru EJ25 engine, as they can handle increased cylinder pressures.

Disadvantages:

1. Cost: The Supertech SPRK-TS1015-SU5 70lbs Dual Valve Springs Retainer Kit is a premium upgrade and may be quite expensive compared to stock springs.

2. Installation Complexity: Installing these valve springs can be a challenging process, requiring specialized tools and expertise. It is recommended to have them installed by a professional mechanic.

3. Potential Clearance Issues: Depending on the specific engine setup, there might be clearance issues with larger aftermarket intake systems or other modifications, which could necessitate additional modifications.

Conclusion:

The Supertech SPRK-TS1015-SU5 70lbs Dual Valve Springs Retainer Kit is an excellent choice for Subaru EJ25 SOHC non-turbo engine owners who desire improved performance, durability, and reduced valve train noise. However, the high cost and installation complexity are significant considerations. Ultimately, the decision to purchase these valve springs depends on your budget, technical capabilities, and desired engine upgrades. If you are planning extensive performance modifications, these valve springs could be a worthwhile investment. If you are looking for a more budget-friendly option, consider stock valve springs or less expensive aftermarket alternatives.

Details:

Useful Links. The retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure long durability. Supertech Subaru Impress EJ25 Dual Valve springs Retainer Kit.

part #: sprkts1015su5 prices

  • $616.33-$629.53

specifications voomvalve:

  • for models: Ej25, Turbo
  • brand: Supertech
  • mpn: Sprk-ts1015-su5
  • part type: Valve Spring
  • engine codes: For Ej25 None Turbo Sohc
  • vehicle make: For Subaru

payments voomvalve:

  • credit card: Discover
  • wallet: Apple-pay
  • other

general voomvalve:

  • condition: New
  • Engines Engine Parts > Valvetrain Components > Valves

seller voomvalve:

  • # reviews: 41991
  • rating: 99.9%
  • city: Sanford, Florida

offer voomvalve:

  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock
  • started: February 9, 2026
  • best offers: True

shipping voomvalve:

  • class: Standard, One-day
  • service: UPS Ground, UPS Next Day Air Saver
  • type: Calculated
  • transit: 3-9 Days
  • cost: $0.00
  • carrier: UPS

returns voomvalve:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days
for models: ej25, turbo, part type: valve spring, engine codes: for ej25 none turbo sohc, vehicle make: for subaru,
category: auto parts > engines engine parts > valvetrain components > valves, sku: 12069757217710892,

Supertech SPRK-TS1015-SU5 Is Similar To:

voomvalve logo
5 offers $616.33–$629.53 USD
  • Offer #1: $629.53 price + $0.00 shipping estimate = $629.53* total. By improving valve lift and reducing the risk of valve float, this kit ensures optimal engine performance and longevity. Enhance the performance of your Subaru Impreza EJ25 with the Supertech Dual Valve Spring Kit.FREE SHIPPING
  • Offer #2: $616.95 price + $0.00 shipping estimate = $616.95* total. Confirm the appropriate installed height and lift clearance for your specific camshaft profile with your engine builder before selecting between the SU1 and SU5 kits. The titanium retainers (RET-TS60/WRX1) are CNC-machined from military-certified alloy, reducing rotating valvetrain mass for improved performance.FREE SHIPPING
  • Offer #3: $616.33 price + $0.00 shipping estimate = $616.33* total. Outer Spring ID: 20.00mm. Dual Valve Spring Kit Dual Spring Kit 70lbs at 35.5mm.FREE SHIPPING
  • Offer #4: $630.31 price + $0.00 shipping estimate = $630.31* total. Each valve spring in this kit is manufactured to strict standards, providing excellent resistance to fatigue and heat. The Supertech Subaru Impreza EJ25 Dual Valve Spring Kit is engineered to enhance the performance and reliability of your vehicle's engine.FREE SHIPPING
  • Offer #5: $629.53 price + $0.00 shipping estimate = $629.53* total. Supertech Subaru Impreza EJ25 Dual Valve Spring Kit.FREE SHIPPING

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