- Description
- Fitment
- Refund Policy
Enhance exhaust performance, sound, and throttle response on your BMW G8X M3 or M4 with the Supersprint Non-Resonated J-Pipe. Engineered as a high-flow center section upgrade, this precision-built J-Pipe replaces the factory center pipe and secondary catalytic converter to deliver improved exhaust flow, increased power potential, and a deeper, more aggressive exhaust note.
Manufactured from premium T304 stainless steel, the Supersprint J-Pipe features a 100mm mandrel-bent cross section designed to reduce backpressure while maintaining excellent fitment and long-term durability. The non-resonated design allows the S58 engine to breathe more freely, resulting in a sharper, race-inspired tone without unnecessary restriction.
This J-Pipe is designed to integrate seamlessly with the OEM primary catalytic converters, allowing for a straightforward installation while retaining factory mounting points and alignment. Every Supersprint exhaust component is hand-crafted in Italy, reflecting decades of motorsport-driven engineering and world-class manufacturing standards.
Founded in 1955, Supersprint is recognized globally for producing some of the highest-quality performance exhaust systems available. Rather than focusing solely on sound, Supersprint engineers complete exhaust solutions that balance flow efficiency, power gains, acoustics, and fitment. The result is an exhaust upgrade that delivers measurable performance improvements while preserving refinement and reliability.
Product Details
- T304 stainless steel construction
- Non-resonated J-Pipe center section
- 100mm mandrel-bent J-Pipe design
- Deletes the secondary catalytic converter
- Compatible with OEM primary catalytic converters
- TIG welded construction
- Hand-built in Italy
- Alternative to Supersprint 527702
Vehicle Applications
This product modifies factory emissions equipment and may not be legal for road use in all areas
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
