MADE IN MICHIGAN
- Shipping and Refund
- Free T-Shirt With $150 Order
69 Sidepipes - 2.5" Manifolds, Big Block 68/69 (69/9004OS-C): Oversized Aluminized - 2.5" head pipe 427 manifolds left hand manifold casting must be #3880827
69 Sidepipes - 2.5" Manifolds, Big Block 70/74 (69/9033OS-C): Oversized Aluminized - 2.5" head pipe 454 manifolds left hand manifold casting must be #3969869
Our new clampable headpipe design allows us to ship your order in a smaller box, giving you a big discount on shipping. The whole system is still jig-fitted, including orientation marks for easy installation. Click here to read more about our clampable design.
These fit 1968 thru 1974+ Big Block Corvettes. For better flow and improved performance, our oversized version has a 2.25" inner baffle instead of the standard 2". For the 68-69 427 we upgrade the headpipe to a full 2.5" like the 454 version.
In studying the original 1969 style sidepipes we found the weak points to be the end plates and inner supports. To compensate for this weakness we now make these parts out of stainless steel for both our aluminized and stainless steel sidepipes.
With our CNC bender we are able to manufacture a sidepipe that fits perfectly every time. We buy top of the line materials and craft everything by hand.
Our 9000 series Sidepipes are geared torward higher horse power cars with larger diameter inner baffles for better flow.
We accept returns. You can return unopened items in the original packaging within 30 days of your purchase with receipt or proof of purchase. If 30 days or more have passed since your purchase, we cannot offer you a refund or an exchange.
Upon receipt of the returned item, we will fully examine it and notify you via email, within a reasonable period of time, whether you are entitled to a return. If you are entitled to a return, we will refund your purchase price and a credit will automatically be applied to your original method of payment.
Only regular priced items may be refunded. Sale items are non-refundable.
To follow-up on the status of your return, please contact us at (231) 825-0155
We only exchange goods if they are defective or damaged. In circumstances where you consider that a product is defective, you should promptly contact us at (231) 825-0155 with details of the product and the defect. You can send the item you consider defective to:
Upon receipt of the returned product, we will fully examine it and notify you via e-mail, within a reasonable period of time, whether you are entitled to a replacement as a result of the defect. If you are eligible, we will send you a replacement product.
To return the item you purchased, please mail it to:
9240 S. Morey Road
Refunds do not include any shipping and handling charges shown on the packaging slip or invoice. Shipping charges for all returns must be prepaid and insured by you. You are responsible for any loss or damage to hardware during shipment. We do not guarantee that we will receive your returned item. Shipping and handling charges are not refundable. Any amounts refunded will not include the cost of shipping.
Receive a free HighFlo Performance T-Shirt with your order of $150 or more! Click here to add a t-shirt to your order, discount will be applied to your order automatically.
Available in gray and black or black and silver. High-quality T-Shirts locally made in Northern Michigan!
S, M, L, X, XL, XXL, & XXXL sizes available.