Manley Performance 1.250 Street Master Single Valve Springs

Rebuilding a 312 CID Ford V-8 engine, installing a camshaft and three two-barrel carburetors back in 1960 was the start of it all and of course we are talking about Hank Manley and his enthusiasm for performance vehicles and racing and the birth of Manley Speed Equipment, Inc. in 1966. Hank focused his attention on things like stainless valves, forged pistons, camshafts, lifters, vanadium valve springs, push rods and timing chain kits and offered these in a catalog from his facility in Bloomfield, New Jersey then later the company grew and the name of the company was changed to Manley Performance Products, Inc.

The company established a presence in the performance parts industry and Hank was eventually joined by his son Trip Manley in 1987 and by 1988 the company had to move its facility to a much larger one in Lakewood, New Jersey with connecting rods and a line of Platinum Series forged pistons being introduced into the product line. Then in 2002 as a testament to the company’s product success Ford Motor Company utilized Manley as their OEM supplier of connecting rods for the 2003/2004 Ford SVT Mustang Cobra.

Improving and re-evaluating products is the key to success in the aftermarket high performance industry and Manley Performance is cognizant of this and stays ahead of the game by developing quality products for vehicles like sport compacts, Ford modular and Chevy LS, never neglecting the traditional V-8 engine business. Examining the products Manley has to offer will offer some insight into the reason for their success and provide you with the impetus to select a Manley product.

Manley offers an array of valves including Stainless Steel Valves, Titanium Valves, Hollow Stem Valves and of course Custom Valves and they create these for a plethora of applications and manufacture them with hard coated .0002” thick chrome. The hard tips far exceed the competition’s and the valve head and under-head shapes are designed for improved flow. It is any wonder Manley has led the competition in this arena for over forty years.

The company offers a myriad of one-piece, wedged end pushrods including the 4130 Chrome Moly Wedged End Pushrods with scrupulously formed ends and exact radii. Camshaft spacers, timing chain kits and pro flow oil pumps are also part of the Manley repertoire. The Manley “Platinum Series” pistons are second to none with 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins and are suitable for SB and BB Chevy, Chrysler 5.7L, Hemi, Ford Modular and Sport Compacts.

In the market for cylinder head components then Manley can help you with primo valvetrain components including their world famous NexTek valve spring line and their steel and titanium spring retainers, steel and titanium valve locks, head bolts and oils seals rocker studs, spring cups, lash caps and guide plates. And if connecting rods are what you need Manley can offer you economical high quality rods to premium Pro-Series rods with designs ranging from Standard Weights and Turbo Tuff, Lightweights, Tour Lites, Feather Lites.

Manly did not forget you 350 and 400 Small Block Chevy, 454 Big Block Chevy, Chevy LS and Chrysler 5.7L/6.1L Hemi owners because they designed Pro Series 4340 alloy forged cranks just for you. And for you Mitsubishi 4G63/4G64 there are the “Race Series” cranks and for the Mitsu 4G63/4G64 and Subaru EJ20/EJ25 owners consider the “Turbo Tuff Series”. A combination of the aforementioned crankshafts and the Manley Platinum Series pistons, H-Beam or I-Beam connecting rods plus Clevite or ACL Racing Bearings and you are sure to create a winning combination.

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California Residents: Prop 65 WARNING: This product MAY contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov

California Residents: TIRE WARNING: LMPerformance will not ship Tires to California.

Legal: Some or all of these parts may not comply with Federal, State, Province, and/or Local laws, ordinances, and regulations. Buyer takes all responsibility to ensure that any modifications or upgrades that have done conform to all applicable laws and regulations for road use, especially pertaining to safety and emissions. LMPerformance is not responsible for buyer not complying with Federal, State, Province, and/or Local laws, ordinances, and regulations. This policy shall be in force for all past, current, and future purchases from LMPerformance, Inc. LMPerformance will not ship ANY non-CARB compliant products to California where California requires products to be CARB certified such as Catalytic Converters and Induction Kits.

Free Shipping: Please note FREE Shipping refers to shipping within the contiguous continental US only. All other locations extra. Some items that require Truck Freight Delivery will require a Truck Freight surcharge. This surcharge is still a discounted shipping amount that is lower then the actual truck freight shipping charge that is charged to LMP. LMP will try to still give the lowest price possible for truck freight items.

Images: Images may be a representation and may not reflect the actual product. Examples would be SPEC stage 3 clutch kits which all use the same photo.

TYPOS: LMPerformance tries to present the best most accurate information on our website. Sometimes we get mistakes in product information sent from vendors such as typos. We can not be responsible for these typos, if you see something that does not look right please let us know before ordering so we can double check for you first. LMPerformance will not pay for typos in any way, monetarily or otherwise.

Price Errors: In the event that a product has mistakenly been listed at an incorrect price, We reserve the right to refuse or cancel any orders placed for product listed at the incorrect price. We reserve the right to refuse or cancel any such orders whether or not the order has been confirmed and your account charged. If your payment type has already been charged for the purchase and your order is cancelled, a full refund to your orignial payment method in the amount of the incorrect price will be issued.

Special Order ITEMS: Some items are Special Ordered and may not be returnable, or even cancellable as they are going into production specifically because you ordered them. Special Ordered items can have a 5-35% cancelation fee.

Cancellations: Instock orders cannot be canceled due to our automated ordering & fast shipping system. To keep our prices low, all cancelations are subject to a 5% cancelation fee to cover transaction processing fees. We reserve the right to charge up to a 10% cancellation fee for cancelled orders due to merchant fees, Special Order fees and the cost of processing and shipping orders.When you request a cancellation of an order or a part, please note that it may take time for a manufacturer to cancel an order if the order is drop-shipped. We also have to confirm that the product has not shipped. If the product has shipped then this must be processed as a return.Also note that sometimes products ship more quickly than expected, so we recommend that you do not purchase alternative products until receiving final confirmation of the cancellation.

Returns: We cannot accept returns on parts that have been used or installed. No returns will be accepted after 30 days. All Returns must be in original packaging. Prior authorization must be given before any return can be made. Up to a 25% Restocking Fee may apply. Special Orders may be subject to Additional Manufacturer Restock Fees as well. Shipping cost will not be refunded.Hoods as well as PCM Programmers may not be returned unless defective and only for replacement. ALL returns must be first filed using our online form found here: https://www.lmperformance.com/returns.

Lost Order Claims All lost order/package claims must be made within 5 days of the shipping date or tracking information delivery date. All claimes made after this date will not be accepted due to Shipping companies policies of filing loss claims.

Damaged Items or Incorrect Items: Please contact us right away if your item has been damaged in shipping or are incorrect. Please note that we will ship replacement items the same method of shipping the order was originally placed for. LMPerformance can not ship packages overnight at our cost if the original shipping was not also overnight. Claims must be filed in order for replacement parts to be shipped.

Warranties:Any warranty claims must be placed with the manufacturer. All of the products sold by LMPerformance, regardless of the manufacturer, are designed for Racing and Performance applications. Many of our manufacturers offer NO WARRANTY on their products, either stated or implied, due to the unusual stresses placed on the parts and because we have no control over how they are installed and used. Many of these products are designed for off-road use only and are not legal for use on public highways. If you have a question about the warranty on a specific product, please e-mail or call us. Buyer assumes all risk and liability associated with these products.

Installation: We are not responsible for or any costs associated with the installation or the improper installation of any products. Purchaser assumes the risk associated with the installation of products. We, along with the manufacturer of each product are not responsible for any direct or indirect damage to the vehicle, personal, or costs incurred from the use of products.