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Collection:

Engine - Valve Train - Spring Kits

60 products
Powersport Superstore is your go-to source for Engine - Valve Train - Spring Kits and related parts. Shop our unbeatable selection of Spring Kits with top-tier service, fast shipping, and great prices.
10% Off
Regular price $118.25
Sale price $118.25
Regular price $131.39
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Since 1939, KPMI has taken great pride in our ability to design innovative performance improvements for valvetrains. This innovative ability has never been more apparent than with the development o...
9% Off
Regular price $31.77
Sale price $31.77
Regular price $34.99
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Designed for maximum performance features interference wound double chrome silicone springs. All spring kits should be used together. Available in complete set for one engine.
10% Off
Regular price $159.88
Sale price $159.88
Regular price $177.64
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Material: TitaniumSince 1939, KPMI has taken great pride in our ability to design innovative performance improvements for valvetrains. This innovative ability has never been more apparent than with...
Regular price $178.95
Sale price $178.95
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Stainless steel conversion kits include only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves. Extend the life of the valve train and intake component...
Regular price $202.95
Sale price $202.95
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Stainless steel conversion kits include only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves. Extend the life of the valve train and intake component...
Regular price $303.95
Sale price $303.95
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Unit price
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Stainless steel conversion kits include only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves. Extend the life of the valve train and intake component...
Regular price $153.95
Sale price $153.95
Regular price
Unit price
per 
Stainless steel conversion kits include only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves. Extend the life of the valve train and intake component...
Regular price $178.95
Sale price $178.95
Regular price
Unit price
per 
Stainless steel conversion kits include only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves. Extend the life of the valve train and intake component...
Regular price $153.95
Sale price $153.95
Regular price
Unit price
per 
Stainless steel conversion kits include only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves. Extend the life of the valve train and intake component...
Regular price $186.95
Sale price $186.95
Regular price
Unit price
per 
Stainless steel conversion kits include only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves. Extend the life of the valve train and intake component...
Regular price $186.95
Sale price $186.95
Regular price
Unit price
per 
Stainless steel conversion kits include only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves. Extend the life of the valve train and intake component...
Regular price $186.95
Sale price $186.95
Regular price
Unit price
per 
Stainless steel conversion kits include only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves. Extend the life of the valve train and intake component...
Regular price $153.97
Sale price $153.97
Regular price
Unit price
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Type: Intake / Exhaust. Retainer Material: H.T. Steel. Valve Lift: 0.500in. Installed Height: 1.445in. Seat Pressure: 104#. Open Pressure: 196#. @ Lift: 0.367in.. Designed for maximum performance ...
0% Off
Regular price $207.83
Sale price $207.83
Regular price $207.95
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Type: Intake / Exhaust. Retainer Material: Titanium. Intake Valve Lift: 0.440in. Intake Installed Height: 1.215in. Intake Seat Pressure: 40#. Intake Open Pressure: 147#. Intake @ Lift: 0.440in. Exh...
15% Off
Regular price $92.39
Sale price $92.39
Regular price $108.95
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Designed for maximum performance features interference wound double chrome silicone springs. All spring kits should be used together. Available in complete set for one engine.Vehicle Fitment:2008-2...
23% Off
Regular price $131.15
Sale price $131.15
Regular price $171.35
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Type: Intake / Exhaust. Retainer Material: Titanium. Valve Lift: 0.440in. Installed Height: 1.225in. Seat Pressure: 70#. Open Pressure: 195#. @ Lift: 0.440in.. Designed for maximum performance fea...
Regular price $157.56
Sale price $157.56
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Type: Intake / Exhaust. Retainer Material: Titanium. Valve Lift: 0.465in. Installed Height: 1.210in. Seat Pressure: 70#. Open Pressure: 185#. @ Lift: 0.400in.. Designed for maximum performance fea...
10% Off
Regular price $221.36
Sale price $221.36
Regular price $245.95
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Lightweight Racing. Type: Intake / Exhaust. Retainer Material: Titanium. Valve Lift: 0.385in. Installed Height: 1.185in. Seat Pressure: 50#. Open Pressure: 160#. @ Lift: 0.385in.. Designed for max...

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