Below are our terms of sale and other order related guidelines. Please take some time to review them.

Note: For the protection of both the cardholder and, we will ship the products ordered ONLY to the billing address your bank has on file for the credit card number. If the shipping address and billing address do not match, the order will not be processed.

Sales Policies: Payment can be made by VISA or MasterCard. We also accept payment methods by Certified Cashiers Check or Money Order in US dollars only. For instructions on ordering via Cashiers Check or Money Order, please email us. California residents are charged an 8% sales tax. Prices are subject to change without notice. If you wish to pre-pay your order, contact for an exact payment amount for parts and shipping. Pre-payment will include charge for parts and freight. All orders will be sent via UPS ground service (domestic), unless otherwise specified. UPS does not ship to any P.O., APO or FPO Boxes. Therefore, if you specify to ship to a P.O., APO or FPO box, we will send your order USPS and a additional charge of $10.00 or more will be incurred onto the shipping cost. If you have a package re-routed to a destination different than what is listed on your order, you will be charged the additional cost that UPS charges us.

Orders are normally processed within 48 hours of receipt of order, however, occasionally it can take up to 3 - 5 business days. After carrier attempts to deliver the merchandise three times, the order will be returned to and will only be reshipped at the buyers expense. All returned items must have a Return Authorization number. A 25% re-stocking charge is normally assessed on all authorized returns.

Sale and Promotional Items: For all items that are on sale or special promotion, refunds are not accepted. ALL SALES FINAL.

Cancellations: Within 24 hours of placing the order, you may cancel without any penalty, unless the order has already been processed. To cancel an order, you may either send an email or call us leave a message or speak directly to a sales rep. However, after 24 hours, you will be subject to a 25% cancellation fee.

International Orders: For International Orders, please email uswith the product(s), quantity and shipping address for a price quote. Payment for international orders must be pre-paid by certified cashiers check, money order or money wire transfer. All in U.S. Currency. Shipping is either U.S. Postal Service or UPS Worldwide Express, customers choice. Large packages must go UPS. All orders shipped via UPS Worldwide Express are insured to the total value.  

Backorders: If for some reason an item on your order is temporarily out of stock, you will be notified via phone or email. If you have multiple items on your order, the "in stock" items will ship and the "out of stock" items will be backordered for you. As soon as the backordered item arrives at our warehouse, it will be shipped and the appropriate shipping charges will also be applied. You must notify us to cancel a backordered item, or you will be responsible for sending it back to us and a 25% restocking fee will be applied to your return.

Return Policies: All returns must be accompanied by an Return Authorization (RA) number. You can request an RA number by sending us an e-mail to In your email please include the following:

Order number
Reason for returning
Your full name
Date of purchase
Phone number and e-mail address

General Return Guidelines: Within 5 days of receipt of your order, you may return products that:

Are in their original packaging/unopened
Have original manufacturer information
Are not damaged
Do not have missing parts

These returns still require an RA number (see above) and all non-defective returns are subject to a 25% re-stocking fee ($15 minimum).

All return freight charges must be prepaid by the customer. There are no refunds on freight. The cost of shipping will be credited only in those instances where the return is a result of our error. All returns are ONLY for store credit or an exchange for items equal or lesser in value.

Damaged Products:  Before signing for your package, make sure the box or packing tape has not been damaged. If box looks like it has been tampered with or damaged during shipping, do not sign!  If your product has been damaged in shipment, you must contact us within 24 hours of receipt. Please e-mail us immediately at We will respond within 24 hours and will guide you through a return and replacement process.

Manufacturer's Warranty: All parts are covered ONLY by the Manufacturer Warranty. Manufacturer warranties vary and are included with your product and should be reviewed carefully for additional information.

Legal Venue: In the event that legal proceedings are required to resolve disputes or indifferences, all claims and filings must be made with the Torrance Municipal Court located in Torrance, California. Inline Four customers will acknowledge and agree to this stipulation once a transaction has been made with Inline Four.


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Thank You for taking the time to read our terms and guidelines.

Contact Information
Phone: 714-903-1898

Technical Information:
Sales, Webmaster: