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Free basic installs for select purchases
Free shipping for orders over $99.99 (restrictions apply). Flat $8.99 Shipping for under $99.99
KPMI RACING VALVE SPRING KIT 30-3041
- 80 Lbs of Seat Pressure / 205 Lbs @ 0.435" Lift (Max)
- Spring kit is designed for compatibility with the OEM integrated Seal/Base (OE# 3610212) where applicable
- Lightweight heat treated Steel Retainer and Beehive Spring reduce reciprocating mass while providing the spring forces required by high performance boosted racing applications.
KPMI® valve springs are wound from Premium Kobe Super-Clean Chrome Silicon Wire. KPMI® valve springs are heat-treated, stress relieved, and shot peened to insure maximum performance and life. Springs are engineered for each specific application using proprietary advanced spring design simulation, and analysis software. Engineers pay special attention to cam and spring harmonics, stress, mass, and operating rpm.
All Items Ship From The USA
Shipping and Delivery
Some products we sell are shipped directly from distributor warehouses around the country.
Although certain items are kept in stock, some products are custom made to order and require manufacturing time.
Expected ship dates are our best estimate based on past shipping times and are more than 90% accurate. Should an unexpected delay in shipping occur, we will notify you by e-mail (or letter) of the new projected shipping date, and provide you with an opportunity to keep your order, or cancel it for a prompt and complete refund.
In-stock items usually ship the same business day (weekends and holidays are not considered business days).
Please allow an additional 1 to 5 business days after the shipment date for delivery.
Get Free Shipping on qualified items without hidden fees.
All Terrain Depot has Free Shipping everyday for most product purchases over $99, saving you some valuable cash on your ATV/UTV Accessory products. Some restrictions do apply.
Here's the details:
- Free shipping offer is valid only on qualified items. Eligible items are identified on their product information page. They can also be identified in your shopping cart.
- Shipping method will be selected by All Terrain Depot. Free shipping orders will be delivered via a standard ground shipping method selected by our direct-ship manufacturers/fulfillment centers.
- Not available on international, Alaska, Hawaii, Puerto Rico or APO/FPO orders. Only standard ground shipping orders to residential and commercial addresses in the continental US are eligible for Free Shipping.
Lost or damaged shipments
Items will not be replaced or refunded until carriers perform their investigation. This period ranges from a few days to a few weeks.