Sweeting Performance Engineering Marketing & Design (SPE∑D)

Since the 1960's when hot rodders wanted to put in performance camshafts, the vacuum needed to operate powerbrakes has been insufficient. They were able to get by with a manual transmission, but with automatics, overdrives, and fuel injection, standard vacuum boosters just will not stop a high performance car. 4-wheel discs require even higher pressures. Street rods are so low that any power brake on the frame will hit the ground. The 7" common street rod booster can only produce 450 psi, with vacuum.





Right now we are looking for somebody part-time, 2 to 3 days a week, to assemble, rebuild, pack, and ship products. Call if you are local to Orange County and have general mechanic experience, or specific brake rebuilding experience. (714)330-5286


SPE∑D 14332 Thunderbird Cir. Huntington Beach, CA 92647


Orders should be shipped within a week or receipt, most items are in stock, but custom orders are custom orders. Our intent is to work hard and deliver you the best product in the best time.

Returns are rare, and are typically for customer requested modifications that are shipped back. Because of user error, it is our policy to try and resolve issues over the phone first, next for it to be shipped to us for inspection to determine if it is the product or installer as to why there is an issue, or so we can modify it to work, then it is returned to the customer. If the problem is due to quality issues on our part and persists after corrections, a refund can be sought, but we are not responsible for the capabilities of the installer. Corrections should be sent to 14332 Thunderbird Cir. Huntington Beach, CA 92647. Restocking fees are usually reserved to large/ special / custom orders. Custom and rush order work may not be reusable for another customer, so we cannot refund that portion of the of the sale price.

Billing/Returns: most online and phone orders are billed when the order is received, the work is usually shipped out at the same time the money clears. It works out well that way, as we can be assured of payment, and you are left with plenty of avenues to get your money back if the product is not shipped. In no case will you keep the product and the money. If you want your money back, you agree to not get it back until we receive the product back, and we are not responsible for return shipping if the refund is due to installer error, or if you buy incomplete kits and the components that you match with ours aren't compatible. We offer returns on custom work merely as a courtesy, but a restocking fee will apply. Our products are considered to have a medium level of complexity in installing and may require tools or other parts (like re-flared brake lines) to make them work, which you accept responsibility for when placing an order with us. We only represent that your purchase includes the parts that you purchase, and does not include anything else.

This policy supersedes Paypal and any other Credit Cards Processors' policy of returning your money, and you consent to it by placing your order. If they award you your money back because of a technicality, and you have the product, than you will ship the product back immediately, and authorize us to charge your card again or provide new billing information in order to hold the funds until we receive the product back or during any period that the money is tied up in dispute, and we will then issue the funds back minus the restocking fee. If the products are no longer resalable as new, than money may be deducted from the refund. We will refund the initial sales price and any other charges in a way to retain just our restocking fee. There will be a $10 per day fee associated with collecting money or the product, that you consent to by placing your order. You also consent to receiving our communications with regards to collecting on a bill through any and all means of communication now in existence or hereafter created. This is not typical, and if you are one of the 99.9% of customers that pays their bills for the work that they request, you should have no problem.


Shipping method? Products generally ship UPS ground: Fed Ex and USPS are available. Rush shipping is available for common items at cost.

Do you drop ship? Drop shipment is available, provide the deliver to address, drop ship carriers may be used to deliver large orders instead of UPS.

Are these Hydroboosts new? Absolutely, this is the field we specialize in and it is our job to know, and we are able to supply new or rebuilt units depending on what you request. We make our own parts, and complete the rest of our catalog with Bosch products.