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VAC - M42 High Performance Valve Spring & Retainer kit (48 pcs)
Purchase VAC - M42 High Performance Valve Spring & Retainer kit (48 pcs)
High Performance Valve Springs & Retainers extract the most from your camshafts
Our VAC High Performance BMW Valve Springs are a dual-spring interference design that is made from H-11 Alloy, a metal often used for highly stressed structural parts (such as aircraft landing gear) that also offers resistance to thermal fatigue.Each spring is shot-peened for stress relief and dual-interference fit to control harmonic resonance across the rev range.
In our dual spring configuration, should something happen to one spring, the other can prevent the valve from dropping and causing catastrophic engine damage.
VAC Steel Alloy retainers work perfect wether competitively racing or daily driving. They offer excellent weight reduction Vs. stock retainers, and are extremely strong. This is the choice for a street car, or an owner that wants to go multiple seasons or years without opening the engine for inspection or tear down.
VAC Titanium Retainers offer an extremely light weight choice for racers that are determined to maximize performance down to each gram of the valvetrain. Ideal for very high RPM extreme race & sprint use. When do you want to select Ti retainers? A good indicator is when you plan to switch to solid lifters or are building an all out race engine that will be regularly inspected.
These kits have worked flawlessly with every camshaft we have ever installed, including those from Schrick, VAC, Sunbelt, Cat, and others. From the reliable and winning results of thousands of our spring assembles, we can say confidently this represents the best set available for your BMW at any price.
Please note that because we engineered this set from a clean design; springs retainers and seats are all sold together as the superior dual spring arrangement must be used with the correct retainers and seats together and are not compatible with OEM seats/retainers, therefore springs are not available separately other than for replacements.
This kit features:
With precise specs and consistent quality, these springs are capable of revving to 12,000 RPM for added peace of mind and maximum performance. We have been using our VAC series of springs in our World Challenge Touring Car, GT3 car, C-Mod E36 'Silver bullet', thousands of race engines, and street engines for years with nothing but excellent results.
Designed with the aid of a Formula-1 engineer; our springs are guaranteed to out perform the competitions valve springs at any price.
- 48 piece kit
- Capable of burst-revving to 12,000 RPM for that added safety and (Over-rev / Mis-shift)
- Designed for maximum reliability
- Capable of handling even the most aggressive of cams
- Compatible with all performance camshafts we have installed in the M42
Purchase VAC - M42 High Performance Valve Spring & Retainer kit (48 pcs)
- SKU: VAC-HPVSK-M42
- Retainer Type: VAC Steel Alloy; VAC Titanium
- Valve Size: 7mm (Early); 6mm (Late)
- Engine Type: M42 (6mm and 7mm valve sizes)
Other products in the category Engine Components / Valve Train:
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