Terms of service


SIX4 MOTORSPORTS LLC TERMS AND CONDITIONS

Effective Date: August 27, 2026

These Terms and Conditions ("Terms") govern purchases, services, repairs, engine builds, machine work, parts sales, product shipments, website use, and other transactions involving Six4 Motorsports LLC ("Six4 Motorsports LLC," "Six4," "we," "us," or "our").

Six4 Motorsports LLC
14600 N US Highway 169, Suite 7W
Smithville, Missouri 64089
Email: info@six4motorsports.com

By placing an order, submitting payment or a deposit, authorizing work, shipping or delivering property to Six4 Motorsports LLC, accepting an estimate or invoice, creating an account, or otherwise purchasing products or services from Six4 Motorsports LLC, you acknowledge that you have read, understood, and agree to these Terms.

1. GENERAL TERMS

Six4 Motorsports LLC provides powersports parts, engine repair and rebuilding, performance engine services, machining-related services, diagnostics, maintenance, assembly, fabrication, and other motorsports-related products and services.

We reserve the right to refuse or discontinue service, cancel an order, or decline a project at our discretion, subject to applicable law.

Prices, availability, specifications, product descriptions, service offerings, and these Terms may change without prior notice. Changes will not retroactively alter rights or obligations that already arose under a completed transaction except where permitted by law.

2. ESTIMATES AND AUTHORIZATION OF WORK

Any estimate is based upon the information reasonably available when the estimate is prepared.

Once an engine, vehicle, assembly, or component is disassembled, inspected, measured, cleaned, tested, or machined, additional damage or required work may be discovered.

Unless otherwise agreed in writing, estimates are not guaranteed final prices.

The customer authorizes Six4 Motorsports LLC to perform the work expressly approved by the customer and any reasonably necessary diagnostic or disassembly procedures required to determine the condition of the submitted property.

Additional work requiring a material increase in price will generally require further customer approval before being performed.

3. DEPOSITS AND PAYMENT

Six4 Motorsports LLC may require a deposit before ordering parts, scheduling work, beginning an engine build, performing machine work, or accepting a special-order project.

Unless otherwise stated in writing:

  • Deposits become non-refundable once parts have been ordered, specially obtained, machined, modified, or work has begun.

  • Special-order, custom, modified, machined, assembled, or customer-specific items are non-refundable except where required by law.

  • The remaining balance is due before property, engines, parts, or completed work will be released or shipped.

  • Six4 Motorsports LLC may retain possession of customer property until all authorized charges are paid to the extent permitted by law.

Returned payments, chargebacks determined to be improper, collection expenses, storage charges, and other amounts legally recoverable may be added to the customer's outstanding balance.

4. CUSTOMER-SUPPLIED PARTS

Six4 Motorsports LLC may, at its discretion, install or use parts supplied by the customer.

Customer-supplied parts are used entirely at the customer's request.

Six4 Motorsports LLC does not warrant the quality, authenticity, suitability, dimensional accuracy, durability, compatibility, manufacture, or condition of customer-supplied parts.

If a customer-supplied component is defective, incorrectly manufactured, incompatible, counterfeit, previously damaged, improperly modified, or causes additional damage or labor, the customer is responsible for any resulting additional costs.

Labor associated with removing, replacing, diagnosing, or repairing a failed customer-supplied component is not automatically covered by Six4 Motorsports LLC.

5. USED, RACING, AND HIGH-PERFORMANCE COMPONENTS

Used, modified, rebuilt, racing, competition, aftermarket, and high-performance components involve increased risk compared with new OEM equipment.

Unless Six4 Motorsports LLC expressly provides a written warranty, such components are sold or serviced AS IS, to the fullest extent permitted by law.

The customer acknowledges that racing, competition use, high-RPM operation, increased compression, power modifications, tuning changes, aftermarket fuels, altered lubrication systems, aggressive riding, inadequate warm-up, overheating, detonation, improper maintenance, and other operating conditions can substantially shorten component and engine life.

No statement regarding anticipated horsepower, performance, service life, reliability, compression, operating temperature, or similar result constitutes a guarantee unless expressly stated as a written warranty signed or issued by Six4 Motorsports LLC.

6. OFF-ROAD AND COMPETITION USE

Certain products and modifications sold or installed by Six4 Motorsports LLC may be intended solely for racing, closed-course, competition, or off-road use.

The customer is solely responsible for determining whether any product, modification, tune, emissions-related component, lighting equipment, exhaust system, or other modification is lawful for the customer's intended use and jurisdiction.

Six4 Motorsports LLC does not authorize unlawful operation of any vehicle or equipment on public roads.

7. ASSUMPTION OF RISK

Powersports activities inherently involve risk of property damage, serious bodily injury, paralysis, and death.

By purchasing, installing, operating, testing, racing, or otherwise using products or services provided by Six4 Motorsports LLC, the customer knowingly assumes all inherent and reasonably foreseeable risks associated with the operation, racing, modification, repair, maintenance, and use of motorcycles, ATVs, UTVs, engines, vehicles, and related equipment.

The customer is responsible for performing or obtaining appropriate pre-operation inspections and confirming that the vehicle or equipment is safe and suitable for its intended use.

8. CUSTOMER PROPERTY — LOSS, THEFT, FIRE, WEATHER, AND DAMAGE

Customers who deliver or ship engines, vehicles, parts, tools, accessories, containers, or other property to Six4 Motorsports LLC acknowledge that storage and handling of physical property involve risks beyond Six4 Motorsports LLC' reasonable control.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, SIX4 MOTORSPORTS LLC SHALL NOT BE LIABLE FOR LOSS, THEFT, VANDALISM, FIRE, FLOOD, STORM, HAIL, WATER DAMAGE, POWER FAILURE, CIVIL DISTURBANCE, ACTS OF THIRD PARTIES, CARRIER LOSS, ACCIDENTAL DAMAGE, OR OTHER LOSS OR DAMAGE TO CUSTOMER PROPERTY EXCEPT TO THE EXTENT LIABILITY CANNOT LAWFULLY BE DISCLAIMED.

Customers are responsible for maintaining appropriate insurance on vehicles, engines, components, and other property while that property is transported to, stored at, serviced by, or transported from Six4 Motorsports LLC.

Six4 Motorsports LLC does not act as an insurer of customer property.

This section does not eliminate any responsibility that applicable law expressly prohibits Six4 Motorsports LLC from disclaiming.

9. PRE-EXISTING OR HIDDEN DAMAGE

Six4 Motorsports LLC is not responsible for pre-existing defects or damage, including but not limited to:

  • Cracks

  • Warped components

  • Stripped threads

  • Prior improper repairs

  • Corrosion

  • Metal fatigue

  • Heat damage

  • Bearing damage

  • Internal contamination

  • Electrical damage

  • Improper machining

  • Weld repairs

  • Previously modified components

  • Incorrect assembly by another person

  • Damage that was not reasonably discoverable before disassembly or testing

Disassembly, cleaning, inspection, testing, machining, or normal repair procedures may reveal or worsen a component that was already cracked, weakened, seized, damaged, or near failure.

The discovery of such damage does not by itself establish that Six4 Motorsports LLC caused the condition.

10. ENGINE BUILD AND MACHINING TOLERANCES

Engine rebuilding and performance work involve measurements, tolerances, clearances, component compatibility, and manufacturing variations.

Six4 Motorsports LLC will perform authorized work using reasonable professional judgment and practices appropriate to the particular project.

Final engine performance and longevity can be affected by circumstances outside Six4 Motorsports LLC' control, including tuning, fuel, oil, cooling, installation, air filtration, exhaust configuration, rider operation, break-in procedure, maintenance, external components, and subsequent modifications.

The customer is responsible for following any break-in, oil, fuel, valve adjustment, maintenance, tuning, warm-up, and operating instructions provided with the build.

11. CUSTOMER INSTALLATION AND THIRD-PARTY WORK

Unless Six4 Motorsports LLC installs the completed engine, component, or product, Six4 Motorsports LLC is not responsible for damage resulting from subsequent installation by the customer or another shop.

This includes damage caused by incorrect:

  • Timing

  • Wiring

  • Fuel mixture or tuning

  • Cooling-system setup

  • Oil level or oil supply

  • Fastener torque

  • Intake installation

  • Exhaust installation

  • Clutch adjustment

  • Engine mounting

  • Air filtration

  • Fuel selection

  • ECU configuration

  • Carburetor setup

  • Break-in procedure

Any suspected issue should be reported before continued operation that could cause additional damage.

12. WARRANTIES

Any warranty offered by Six4 Motorsports LLC must be expressly stated in writing.

Except for an express written warranty and except where prohibited by law, products and services are provided AS IS and AS AVAILABLE.

TO THE FULLEST EXTENT PERMITTED BY LAW, SIX4 MOTORSPORTS LLC DISCLAIMS IMPLIED WARRANTIES, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WHERE SUCH WARRANTIES MAY LAWFULLY BE DISCLAIMED.

Manufacturer warranties on products sold by Six4 Motorsports LLC are governed by the applicable manufacturer's warranty terms.

Six4 Motorsports LLC does not independently extend or enlarge a manufacturer's warranty unless expressly stated in writing.

13. WARRANTY EXCLUSIONS

Unless an express written warranty states otherwise, warranty coverage does not include failure resulting from:

  • Racing or competition use

  • Over-revving

  • Detonation or pre-ignition

  • Lean or incorrect fuel mixture

  • Incorrect tuning

  • Overheating

  • Improper break-in

  • Oil starvation

  • Contaminated oil

  • Incorrect fuel

  • Improper installation

  • Dirt or debris ingestion

  • Water ingestion

  • External component failure

  • Customer-supplied parts

  • Unauthorized disassembly

  • Unauthorized modification

  • Continued operation after signs of malfunction

  • Abuse, accident, or misuse

  • Failure to perform required maintenance

Six4 Motorsports LLC must be given a reasonable opportunity to inspect any alleged warranty failure before repair or disassembly by another party.

14. SHIPPING

Risk associated with shipping may be subject to applicable carrier rules and law.

Customers are responsible for properly packaging any engine, part, or component sent to Six4 Motorsports LLC unless Six4 expressly agrees otherwise.

Six4 Motorsports LLC is not responsible for concealed shipping damage, loss, theft, mishandling, or delay attributable to a third-party carrier to the fullest extent permitted by law.

Customers should retain tracking information and photographs of shipped property and packaging.

If Six4 Motorsports LLC ships completed property, insurance may be purchased or provided as indicated on the invoice or shipment documentation.

Failure to purchase optional additional insurance, where offered, may limit recovery to the amount provided by the carrier or applicable law.

15. INSPECTION UPON DELIVERY

Customers should inspect delivered products and returned components promptly.

Visible shipping damage should be documented immediately and reported to Six4 Motorsports LLC and the carrier.

Customers should not operate an engine or vehicle if packaging damage, fluid leakage, broken components, contamination, or another condition suggests that damage may have occurred during shipment.

16. RETURNS AND CANCELLATIONS

Return eligibility depends on the product and circumstances.

Unless otherwise stated:

  • Unused standard-stock products may be eligible for return subject to approval and any applicable restocking or shipping charges.

  • Installed, used, opened electrical components, fluids, chemicals, gaskets, seals, bearings, internal engine parts, and other products whose condition cannot reasonably be verified may be non-returnable.

  • Custom-ordered, machined, modified, assembled, engraved, coated, fabricated, or otherwise personalized products are non-returnable except for defects or where required by law.

  • Shipping costs are generally non-refundable unless the return results from an error by Six4 Motorsports LLC.

No return should be shipped without prior authorization.

17. STORAGE CHARGES AND UNCLAIMED PROPERTY

Completed property must be picked up or paid for within the timeframe stated by Six4 Motorsports LLC.

If property is not retrieved after notice that work has been completed or service has otherwise ended, Six4 Motorsports LLC may assess reasonable storage charges if those charges were disclosed or otherwise permitted by applicable law.

Six4 Motorsports LLC reserves all mechanic's, artisan's, possessory, storage, and other lien rights available under Missouri or other applicable law.

Customer property will not simply become the property of Six4 Motorsports LLC merely because it remains unclaimed. Any lien enforcement, title procedure, sale, disposal, or other disposition will be handled in accordance with applicable law.

18. CHARGEBACKS AND PAYMENT DISPUTES

Customers agree to contact Six4 Motorsports LLC regarding a legitimate billing or performance dispute before initiating a payment chargeback when reasonably possible.

Filing a knowingly false or fraudulent chargeback does not extinguish an otherwise valid debt.

Six4 Motorsports LLC reserves the right to provide invoices, authorization records, communications, tracking information, photographs, work records, and these Terms to payment processors, financial institutions, arbitrators, collection agencies, courts, or other appropriate parties when reasonably necessary to defend a disputed transaction.

19. WEBSITE INFORMATION

We attempt to keep product descriptions, compatibility information, images, prices, and specifications accurate.

However, typographical errors, supplier errors, catalog errors, manufacturer changes, and technical inaccuracies may occur.

Customers are responsible for verifying critical fitment information before installation.

Six4 Motorsports LLC may correct errors or cancel an affected order and provide an appropriate refund where necessary.

20. LIMITATION OF LIABILITY

TO THE MAXIMUM EXTENT PERMITTED BY LAW, SIX4 MOTORSPORTS LLC AND ITS OWNERS, MEMBERS, EMPLOYEES, AGENTS, CONTRACTORS, AND AFFILIATES SHALL NOT BE LIABLE FOR INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING FROM A PRODUCT, SERVICE, REPAIR, ENGINE BUILD, DELAY, LOSS OF USE, RACING ACTIVITY, BUSINESS INTERRUPTION, LOST PROFITS, TOWING EXPENSE, RENTAL EXPENSE, OR THIRD-PARTY CLAIM.

TO THE MAXIMUM EXTENT PERMITTED BY LAW, SIX4 MOTORSPORTS LLC' AGGREGATE LIABILITY ARISING FROM A PARTICULAR PRODUCT OR SERVICE SHALL NOT EXCEED THE AMOUNT ACTUALLY PAID TO SIX4 MOTORSPORTS LLC FOR THE PRODUCT OR SERVICE GIVING RISE TO THE CLAIM.

These limitations apply only to the extent permitted by applicable law and do not exclude liability that legally cannot be limited or waived.

21. RELEASE AND INDEMNIFICATION

To the maximum extent permitted by law, the customer releases Six4 Motorsports LLC and its owners, members, employees, agents, contractors, and affiliates from claims arising from risks knowingly assumed under these Terms.

The customer agrees to indemnify and hold Six4 Motorsports LLC harmless from third-party claims, losses, or expenses resulting from the customer's unlawful use, improper installation, unauthorized modification, misuse, racing activity, negligent operation, or violation of these Terms, except to the extent such indemnification is prohibited by law.

22. SAFETY

The customer is responsible for ensuring that any completed vehicle, engine, or equipment is safe before operation.

Repairs to one system do not constitute an inspection or certification of the entire vehicle.

Unless expressly included within the authorized work, Six4 Motorsports LLC does not represent that it has inspected every safety-related component.

Any unusual noise, vibration, leakage, overheating, handling problem, brake concern, steering concern, oil-pressure concern, or other abnormal condition should be investigated before continued operation.

23. PHOTOGRAPHS AND DOCUMENTATION

Six4 Motorsports LLC may photograph or document customer property for inspection, repair records, condition documentation, warranty evaluation, quality control, and dispute documentation.

Six4 Motorsports LLC may use non-identifying photographs of work performed for portfolio, educational, website, or social-media purposes unless the customer requests otherwise in writing before publication.

Personal information such as customer names, addresses, VINs, serial numbers, license plates, or other identifying details should not intentionally be publicly displayed without appropriate authorization.

24. INTELLECTUAL PROPERTY

The Six4 Motorsports LLC name, branding, logos, original photographs, graphics, written materials, product designs, and other proprietary content may not be copied, reproduced, sold, or commercially exploited without permission except as allowed by applicable law.

25. GOVERNING LAW

Except where federal law controls or applicable law requires otherwise, these Terms and any transaction with Six4 Motorsports LLC shall be governed by the laws of the State of Missouri, without regard to conflict-of-law principles.

26. REQUIRED INFORMAL DISPUTE NOTICE

Before commencing arbitration or litigation, either party must first provide the other party written notice describing the dispute and requested resolution.

Notice to Six4 Motorsports LLC must be sent to:

Six4 Motorsports LLC
14600 N US Highway 169, Suite 7W
Smithville, Missouri 64089
info@six4motorsports.com

The parties agree to make a good-faith attempt to resolve the dispute informally for at least 30 days after receipt of the notice before initiating arbitration, unless immediate legal relief is reasonably necessary to prevent irreparable harm or applicable law requires otherwise.

27. BINDING ARBITRATION AGREEMENT

PLEASE READ THIS SECTION CAREFULLY. IT AFFECTS YOUR LEGAL RIGHTS, INCLUDING YOUR RIGHT TO HAVE CERTAIN DISPUTES DECIDED BY A JUDGE OR JURY.

Except for disputes specifically excluded below, the customer and Six4 Motorsports LLC agree that any dispute, claim, or controversy arising out of or relating to these Terms, an order, service, repair, product, engine build, payment, warranty, communication, or relationship between the customer and Six4 Motorsports LLC shall be resolved by final and binding individual arbitration rather than in court.

This arbitration agreement is intended to constitute a written agreement to arbitrate under the Federal Arbitration Act where that Act applies.

For a transaction considered a consumer transaction under the applicable rules, arbitration shall be administered by the American Arbitration Association ("AAA") pursuant to its Consumer Arbitration Rules then in effect.

For a qualifying commercial or business-to-business dispute, the AAA Commercial Arbitration Rules may apply.

The arbitrator shall have authority to award any individual remedy available under applicable law, subject to the lawful limitations contained in these Terms.

Unless applicable law or AAA rules require otherwise, arbitration may occur by documents, telephone, video conference, or at a reasonably convenient location.

28. JURY TRIAL WAIVER

TO THE EXTENT A DISPUTE IS SUBJECT TO BINDING ARBITRATION, BOTH PARTIES KNOWINGLY WAIVE THE RIGHT TO HAVE THAT DISPUTE DECIDED BY A JUDGE OR JURY IN COURT.

29. CLASS AND REPRESENTATIVE ACTION WAIVER

To the maximum extent permitted by applicable law, disputes shall be resolved solely on an individual basis.

Neither the customer nor Six4 Motorsports LLC may seek to have a dispute heard as a class action, collective action, consolidated action, private-attorney-general action, or other representative proceeding in arbitration.

The arbitrator may award relief only to the individual party seeking relief and only to the extent necessary to resolve that party's individual claim, except where applicable law prohibits such a limitation.

If a court of competent jurisdiction determines that a particular portion of this class or representative action waiver cannot lawfully be enforced with respect to a particular claim or form of relief, that portion shall be severed or handled as required by applicable law while the remainder of the arbitration agreement remains effective to the maximum extent legally permitted.

30. SMALL CLAIMS COURT EXCEPTION

Either party may bring an eligible individual claim in small claims court instead of arbitration, provided the claim remains within that court's jurisdiction and proceeds only on an individual basis.

31. INJUNCTIVE AND PROTECTIVE RELIEF

Nothing in these Terms prevents either party from seeking temporary or preliminary relief from a court when necessary to preserve the status quo, protect property, protect intellectual-property rights, enforce a lawful lien, prevent fraud, or prevent immediate and irreparable harm while a dispute is being resolved.

32. ARBITRATION COSTS

Consumer arbitration fees shall be allocated in accordance with applicable law and the AAA Consumer Arbitration Rules and fee schedule.

Six4 Motorsports LLC will pay fees that applicable AAA rules or law require the business to pay.

Each party shall otherwise bear its own attorneys' fees and costs unless the arbitrator awards fees or costs under a contract, statute, rule, or other applicable law.

33. SEVERABILITY

If any provision of these Terms is determined to be invalid or unenforceable, that provision shall be enforced to the maximum extent legally permitted and, where appropriate, severed without invalidating the remaining provisions.

34. NO WAIVER

Failure by Six4 Motorsports LLC to enforce any provision on one occasion does not waive the right to enforce that provision in the future.

35. ENTIRE AGREEMENT

These Terms, together with the applicable estimate, work authorization, invoice, written warranty, return policy, privacy policy, shipping policy, and any other written agreement specifically applicable to the transaction, constitute the agreement between the customer and Six4 Motorsports LLC concerning the subject matter addressed herein.

If a specifically negotiated written agreement signed or expressly accepted by Six4 Motorsports LLC conflicts with these general Terms, the specifically negotiated term will control for that transaction.

36. ELECTRONIC ACCEPTANCE

Electronic acceptance has the same effect as a physical signature to the extent permitted by law.

By checking a box stating that the customer agrees to the Terms, completing checkout after being provided conspicuous notice of these Terms, electronically approving an estimate, signing a work authorization, paying an invoice incorporating these Terms, or otherwise expressly agreeing to them, the customer manifests acceptance of these Terms.

37. CONTACT

Questions concerning these Terms may be directed to:

Six4 Motorsports LLC
14600 N US Highway 169, Suite 7W
Smithville, Missouri 64089
Email: info@six4motorsports.com