Supertech Toyota 4AGE 16V Single Valve Spring – Set of 16

SKU: SPR-TC25S-16 / UPC: 1037721244671

Supertech Toyota 4AGE 16V Single Valve Springs Set of 16

These valve springs deliver precise control and consistent performance under high-rev conditions, allowing your engine to maintain valve timing accuracy for smoother power delivery and reduced risk of valve float. Built from premium Super Clean Chrome Silicon Vanadium Steel alloy, they resist fatigue and maintain shape over extended use, making them a reliable option for track days, street driving, or daily reliability in performance builds. Compared to stock or alternative springs, this set provides higher seat and open pressures that support increased lift and RPM without sacrificing durability, giving you the edge in responsive throttle and efficient combustion.

Key Specifications

• Material: Super Clean Chrome Silicon Vanadium Steel Alloy, heat-treated for strength and longevity
• Spring Type: Single beehive design for reduced mass and better high-RPM stability
• Seat Pressure: 55 lbs at 35.4 mm (1.394 inches)
• Open Pressure: 130 lbs at 10.5 mm (0.413 inches) lift
• Coil Bind Height: 21 mm (0.827 inches)
• Maximum Valve Lift: 14.40 mm (0.567 inches)
• Spring Rate: 7.60 lbs/mm
• Outer Diameter: 25 mm
• Inner Diameter: 18 mm
• UPC: 1037721244671

These specs ensure stable valve operation up to demanding RPM levels, helping extract more from your 4AGE 16V while keeping the valvetrain secure.

Vehicle Fitment

This Supertech SPR-TC25S-16 set fits a range of vehicles equipped with the Toyota 4A-GE 16-valve engine or compatible Mazda FS-series valvetrains. Verify compatibility with your specific setup, as modifications may be needed for some applications.

Toyota Models (4A-GE 16V Engine):

• 1983-1987 Corolla Levin (AE86)
• 1983-1987 Sprinter Trueno (AE86)
• 1984-1987 Corolla (AE86)
• 1984-1989 MR2 (AW11)
• 1983-1992 Carina (various trims with 4A-GE)

Mazda Models:

• 1989-1992 Probe (GT with FS-DE)
• 1993-2002 626 (2.0L FS)
• 1993-1997 MX-6 (2.0L FS)
• 1993-2002 Protegé (2.0L FS, including 2001-2003 models)

What’s Included in Your Purchase

• 16 x Supertech Single Valve Springs (part SPR-TC25S each)

Note: No retainers, keepers, or bases included, pair with Supertech RET-2500/T1 titanium retainers and SS-3012 spring bases for a complete valvetrain refresh

Packaging and Shipping Details

• Part Weight: 0.96 lbs (total set)
• Shipping Box Dimensions: 6.50 inches (width) x 2.50 inches (height) x 7.00 inches (depth)

Order the Supertech Toyota 4AGE 16V Single Valve Springs Set of 16 today for a straightforward installation that enhances your engine’s breathing and output. Ideal for enthusiasts rebuilding classic JDM icons like the AE86 or tuning Mazda coupes for spirited drives.