Warranty Information

At STILLEN, we understand that real‑world driving happens, and even the best‑engineered products may occasionally need warranty support. When that moment comes, we want you to know that we stand firmly behind the quality, performance, and craftsmanship of every STILLEN product you purchase. Our goal is to ensure that your experience is backed by clear, dependable warranty coverage and a support process you can trust. This aligns with industry practices emphasizing product quality, proper use, and transparent warranty conditions.

Warranties naturally include specific conditions and limitations depending on product type—such as coverage parameters, exclusions related to misuse, improper installation, or modification, and expectations for product use. Because of this, each STILLEN product category carries its own detailed warranty terms, which are explained in the sections that follow.

If you believe you meet the warranty prerequisites and need to start a claim, please contact our team at sales@stillen.com with the following:

Photos of the Issue
Original Invoice/Receipt ot Order Information
Contact Details

Our warranty specialists will review your submission and provide next steps based on your product’s category and eligibility.

General Warranty Disclaimers:

Damages caused by improper use, installation, modifications and/or collisions will be considered user-error and will NOT be covered under warranty.
User assumes all risks and costs associated with the use of SMSP products.
Products purchased from un-authorized dealers will not be covered under warranty.
Warranties only cover the initial purchaser and will not transfer to second hand users.
Failure to provide the required invoice, images and/or warranty claim form will result in the denial of the warranty claim. NO EXCEPTIONS.
"Lifetime" as it relates to warranty language is defined as a maximum period of seven (7) years.
SMSP is not responsible for fees associated with the installation/removal/servicing of components.
KEEP ORIGINAL BOX FOR ALL RETURNS. Stillen cannot provide replacement box, or package materials.
KEEP YOUR FACTORY PARTS. SMSP will not provide temporary or replacement parts.

Exhaust:

The manufacturer warrants that all SMSP Exhaust Performance Products are free from defects. Most of our exhaust products are warranted against blowouts and defects in material and workmanship for as long as the original purchaser owns the vehicle on which it was originally installed. The warranty is void if the exhaust products are not installed properly on the vehicle for which it is designed. This warranty does not apply to any exhaust product which has been installed on any commercial or racing vehicle or which has been improperly installed, altered, or subjected to misuses or damage from accidents. Also, cost of labor and any additional parts required to complete installation of a replacement product are not covered by this warranty.

Proof of purchase, MUST be presented to the service outlet from which you originally purchased the exhaust product, or any participating dealer, when making a claim for replacement. The original exhaust product must also be returned and exchanged for a new exhaust product of the same part number. SMSP acknowledges that parts may be discontinued. If the exhaust product has been discontinued, SMSP may not be able to offer a replacement option.

No other warranty, expressed or implied (including merchantability), applies to the exhaust product, nor is any person or the manufacturer authorized to assume any other warranty. The manufacturer does not assume any responsibility for any consequential damages occurred by the exhaust product, or inconvenience or interruption in any operation.

This warranty does not extend to cosmetic blemishes and/or finish deterioration. Stainless steel does require cleaning and maintenance to retain its finish. Failure to do so can result in surface corrosion which is not covered by warranty.

SMSP does not warranty other companies and/or manufacturers product and/or work. If the installer of the product fails to follow SMSP instructions or causes damage to the vehicle during the installation of this product this must be resolved between the customer and the shop performing the work.

An aftermarket exhaust system will change the note/tone of your exhaust system, generally causing an increase in sound. While almost all of our customers like the tone of a SMSP exhaust system. SMSP does not make any guarantee that this tone will suit your personal preferences.

If you receive a defective item, and it has not been used, modified, disassembled or installed, SMSP will, at its discretion, replace or repair the item at no charge.
SMSP is not responsible for any additional costs incurred, including but not limited to: labor, freight, rental vehicle, or subsequent damage caused by product.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Stainless Steel Systems: Limited Lifetime Warranty against manufacturing defects and rust through.

Intakes:

The manufacturer warrants that all SMSP Air Intake Products are free from defects. Most of our intake products are warranted against failures and defects in material and workmanship for as long as the original purchaser owns the vehicle on which it was originally installed. The warranty is void if the air intake products are not installed properly on the vehicle for which it is designed.

This warranty does not apply to any air intake product which has been installed on any commercial or racing vehicle or which has been improperly installed, altered, or subjected to misuse or damage from accidents. Also, cost of labor and any additional parts required to complete installation of a replacement product are not covered by this warranty.

Proof of purchase, MUST be presented to the service outlet from which you originally purchased the intake product, or any participating dealer, when making a claim for replacement. The original air intake product must also be returned and exchanged for a new air intake product of the same part number. SMSP acknowledges that parts may be discontinued. If the intake product has been discontinued, SMSP may not be able to offer a replacement option.

No other warranty, expressed or implied (including merchantability), applies to the air intake product, nor is any person or the manufacturer authorized to assume any other warranty. The manufacturer does not assume any responsibility for any consequential damages occurred by the air intake product, or inconvenience or interruption in any operation.

This warranty does not extend to cosmetic blemishes and/or finish deterioration. SMSP air intakes are manufactured out of various materials each requiring care and maintenance. SMSP does not guarantee that these finishes will not deteriorate with age and use and this deterioration may be accelerated with neglect and misuse.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Sway Bars:

The manufacturer warrants that all SMSP Sway Bar Products are free from defects. Most of our Sway Bar products are warranted against failures and defects in material and workmanship for as long as the original purchaser owns the vehicle on which it was originally installed. The warranty is void if the Sway Bar products are not installed properly on the vehicle for which it is designed. This warranty does not apply to any Sway Bar product which has been installed on any commercial or racing vehicle or which has been improperly installed, altered, or subjected to misuse or damage from accidents. Also, cost of labor and any additional parts required to complete installation of a replacement product are not covered by this warranty.

Proof of purchase, MUST be presented to the service outlet from which you originally purchased the sway bar product, or any participating dealer, when making a claim for replacement. The original sway bar product must also be returned and exchanged for a new sway bar product of the same part number.

No other warranty, expressed or implied (including merchantability), applies to the sway bar product, nor is any person or the manufacturer authorized to assume any other warranty. The manufacturer does not assume any responsibility for any consequential damages occurred by the sway bar product, or inconvenience or interruption in any operation.

This warranty does not extend to cosmetic blemishes and/or finish deterioration. SMSP sway bars are manufactured out of various materials each requiring care and maintenance. SMSP does not guarantee that these finishes will not deteriorate with age and use and this deterioration may be accelerated with neglect and misuse.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Urethane:

The manufacturer warrants that all SMSP Poly-Urethane Products are free from defects. Most of our soft Poly-urethane products are warranted against failures and defects in material and workmanship for as long as the original purchaser owns the vehicle on which it was originally installed. Most of our hard Poly-Urethane products are warranted against defects in material and workmanship for as long as the original purchaser owns the vehicle on which it was originally installed. The warranty is void if the Poly-Urethane products are not installed properly on the vehicle for which it is designed. This warranty does not apply to any Poly-Urethane product which has been installed on any commercial or racing vehicle or which has been improperly installed, altered, or subjected to misuse or damage from accidents or impacts. Also, cost of labor and any additional parts required to complete installation of a replacement product are not covered by this warranty.

Proof of purchase, MUST be presented to the service outlet from which you originally purchased the Poly-Urethane product, or any participating dealer, when making a claim for replacement. The original Poly-Urethane product must also be returned and exchanged for a new Poly-Urethane product of the same part number.

No other warranty, expressed or implied (including merchantability), applies to the Poly-Urethane product, nor is any person or the manufacturer authorized to assume any other warranty. The manufacturer does not assume any responsibility for any consequential damages occurred by the Poly-Urethane product, or inconvenience or interruption in any operation.

This warranty does not extend to finish deterioration. SMSP Poly-Urethane products must be stored in a cool, dry environment, out of direct sunlight when not installed on the vehicle. Improper storage can lead to material warping, discoloration, and other results. SMSP does not guarantee that these finishes will not deteriorate with age and this deterioration may be accelerated with neglect and misuse.

SMSP is not responsible for costs incurred due to the customer or body shops failure to test fit and/or inspect product prior to painting. SMSP is not responsible for costs incurred due to the customer or body shops failure to follow SMSP instructions on the proper cleaning and preparation of parts prior to painting.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

TruControl Power Modules:

TruControl Power Modules are covered under a 5 year manufacturer warranty. This warranty is for the product only and does not extend to the powertrain of the vehicle.

1. The Warranter shall warrant that as of the date of acquisition of the respective product shown on the invoice, the product components specified in section III. will show no defects within the periods specified hereinafter that might interfere with the respective product's function (“Warranty Case”).

2. The product warranty shall apply only insofar as the Warrantee uses the vehicle, in which the respective product has been installed, for private - i.e. non-commercial - purposes only (commercial use means, for example, commercial passenger transportation, driving school vehicle; courier/delivery vehicle; rental car), unless such commercial use of the vehicle has not caused the defect in the product component that is under warranty.

3. In a Warranty Case, the product warranty shall, at the Warranter's option, cover either the free-of-charge supply of an equivalent replacement product or the free-of-charge repair of the product affected (if and insofar as technically feasible). In addition to that, the Warranter shall also organize, and pay for, the transportation of the replacement product, or of the product repaired, to the Warrantee. The Warranter’s liability under this warranty shall be limited to the prompt correction or replacement of any defective part of the product which RaceChip determines to be necessary.

4. The indicated performance gains and fuel efficiency gains are target values. Deviations upwards and downwards are possible. These may, for example, be caused by standard factory model variations, the quality of the fuel used, the maintenance and ageing condition of the vehicle or the driving habits. If the indicated performance or fuel efficiency gains are not met, the purchaser must notify RaceChip within thirty (30) days from the day he or she received the product to get a refund.

The Warranter is not liable for any and all consequential damages arising from the breach of any implied or written warranty in regard to the sale of this product. This product warranty shall not, in particular, give rise to claims for damages or reimbursement of wasted expenditures.

Exclusion of product warranty:

1. Claims under this product warranty require that the defect to the respective product has not been caused by one of the following circumstances:

normal wear;
incorrect or improper installation (e.g. if the product or cable harness is laid in areas under great thermal stress, such as at the manifold or along the motor block, resulting in damage caused by melting) and/or product startup contrary to the Warranter's specifications;
improper use or operation of the product contrary to the Warranter's specifications (e.g. rotary switch settings that have not been approved by the Warranter);
changes performed to the product or unauthorized repair attempts without the Warranter's prior approval;
off-road use in water under maximum use of the vehicle's fording depth;
external damage, in particular accident in road traffic (i.e. a sudden event in road traffic re-sulting in a typical risk of damage caused in traffic), or damage caused by car wash, animals, etc.;
force majeure or exceptional/extreme natural events, such as floods, natural disasters, etc.
own fault on the part of Warrantee or third parties.

2. Warranty claims shall be excluded also if the Warrantee should culpably violate the regulations on how to proceed in a Warranty Case, as specified in section VI of the present terms of warranty, unless such violation is causal neither to the ascertainment of the Warranty Case nor to the ascertainment or extent of the Warranter's liability.

3. Warranty claims shall be also excluded if the product is installed in a vehicle model or engine type for which it has not been expressly approved by the Warranter.

This warranty is void if the device is opened or otherwise tampered with

Brake Pads:

The manufacturer warrants that all SMSP Brake Pad Products are free from defects. Most of our Brake Pad products are warranted against failures and defects in material and workmanship for one year on the components of the kit. The warranty is void if the Brake Pad products are not installed properly on the vehicle for which it is designed. This warranty does not apply to any Brake Pad product which has been installed on any commercial or racing vehicle or which has been improperly installed, altered, maintained, or subjected to misuse or damage from accidents. Also, cost of labor and any additional parts required to complete installation of a replacement product are not covered by this warranty.

Proof of purchase, MUST be presented to the service outlet from which you originally purchased the Brake Pad product, or any participating dealer, when making a claim for replacement. The original product must also be returned and exchanged for a new product of the same part number.

No other warranty, expressed or implied (including merchantability), applies to the product, nor is any person or the manufacturer authorized to assume any other warranty. The manufacturer does not assume any responsibility for any consequential damages occurred by the Brake pad product, or inconvenience or interruption in any operation.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Brake Rotors:

The manufacturer warrants that all SMSP Brake Rotor Products are free from defects. Most of our Brake Rotor products are warranted against failures and defects in material and workmanship for one year on the components of the kit. The warranty is void if the Brake Rotor products are not installed properly on the vehicle for which it is designed.

This warranty does not apply to any Brake Rotor product which has been installed on any commercial or racing vehicle or which has been improperly installed, altered, maintained, or subjected to misuse or damage from accidents. Also, cost of labor and any additional parts required to complete installation of a replacement product are not covered by this warranty.

Proof of purchase, MUST be presented to the service outlet from which you originally purchased the Brake Rotor product, or any participating dealer, when making a claim for replacement. The original product must also be returned and exchanged for a new product of the same part number.

No other warranty, expressed or implied (including merchantability), applies to the product, nor is any person or the manufacturer authorized to assume any other warranty. The manufacturer does not assume any responsibility for any consequential damages occurred by the Brake Rotor product, or inconvenience or interruption in any operation.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

SMSP Brake Rotors are finished with a corrosion resistant plating material. This material is removed by the friction between the rotor and pad. During the time the plating is being removed the customer may feel and/or hear “unusual” noises. In most cases this is the plating material being removed and is to be considered normal. We can not give a timeline as to how long this will take to remove as there are many variables including but not limited to; driving style, driving type (highway vs. city), regularity of vehicle use, etc. If the unusual characteristics persist past the point the plating has been removed please consult SMSP for further guidance.