Supertech Yamaha FZR1800 BMR Titanium Retainer for Factory Spring - Single (Shim on Top) - RET-YAFZR18-BMR

Supertech Yamaha FZR1800 BMR Titanium Retainer for Factory Spring - Single (Shim on Top)

Supertech Yamaha FZR1800 Spring Shim on Top 9.48mm Titanium Retainer - Single (for SPR-EC3020) - RET-YA3020

Supertech Yamaha FZR1800 Spring Shim on Top 9.48mm Titanium Retainer - Single (for SPR-EC3020)

Supertech Yamaha SPR-YXZ1000 4.5mm Valve Stem Titanium Retainer - Single - RET-YXZ1000

Supertech Yamaha SPR-YXZ1000 4.5mm Valve Stem Titanium Retainer - Single

Supertech Yamaha YXZ1000/TR1 21.45mm OD 15.25mm ID 47lbs/34.7mm Single Valve Spring Kit - SPRK-YXZ1000-1

Supertech Yamaha YXZ1000/TR1 21.45mm OD 15.25mm ID 47lbs/34.7mm Single Valve Spring Kit

Supertech/Apocalypse 16ea, 2V valve springs for stock retainers (drop-in)

For Ford Modular 4.6L and 5.4L engines with PI 2v heads.  These have been used with 20psi without any issues.  We recommend these for most applications not seeing over 30psi.  These are comparable to...

Supertech/Apocalypse 2V valve springs for stock retainers (drop-in) single spring

For Ford Modular 4.6L and 5.4L engines with PI 2v heads. These have been used with 20psi without any issues. We recommend these for most applications not seeing over 25psi.Beehive Single -OD 0.700"/...

Supertech/Apocalypse 3v Valve springs for stock retainers (drop-in)

Ford Modular 4.6L 3V Beehive Single spring OD 1.102"/.957"78lbs@1.535"Rate 322lbs/inCB: .897"Ovate wireMax Lift: .575"Use with OEM retainer includes SEAT-M65BE-2 seat locators

Supertech/Apocalypse 4v springs and retainers

This kit includes 32 springs and steel retainers.  These will work for most n/a and boosted setups.These are the next step up from the Supertech Apocalype drop-in springs.  Beehive Single spring OD...

Supertech/Apocalypse 4v springs for stock retainers (drop-in) single spring

These springs are good for use in most street cars and many race cars.  Good for 30psi, these are an affordable option.Ford Modular 4.6L 4v Beehive Single spring OD 1.075"/.957" 96lbs@1.417" Rate...

V-10 Supertech/Apocalypse 20ea, 2V valve springs for stock retainers (drop-in)

For Ford Modular 4.6L and 5.4L engines with PI 2v heads.  These have been used with 20psi without any issues.  We recommend these for most applications not seeing over 30psi.  These are comparable to...