Tubolight Diamana MTB Tire Insert : SL 29 x 2.0-2.4" ~ One Pair

The lightest mountain bike tire insert on the market.

The lightest mountain bike tire insert on the market.

If we look at how the tire compresses and rebounds on impact, we can see that the whole process happens very quickly. During this time, the tire casing returns to its original shape even before the suspension begins to compress. This is enhanced by a high tire pressure, but at the same time can be mitigated by a lower tire pressure and is actually the reason why a lower pressure tire provides more traction.

On the Diamana, the side channels are shaped to create a Venturi effect, which means that the speed of the airflow through the channels increases as the channels become smaller. This is the same principle of the ground effect of Formula 1 cars and is required to accelerate the air from the outer part of the insert to the inner part between the insert and the rim bed. Air is trapped in the inner part and takes much longer to return to the outer part, leaving very little air at the point of impact during the entire impact moment.

The knobs on the top are inspired by knobs on golf balls and, together with the wave shape, ensure that the air does not bounce back to the tire, resulting in a strong rebound effect, but flows into the side channels.

ABOUT US

NONSTOP CICLISMO is your source for top quality road cycling equipment. Since 1996 we've been providing a unique selection of hard to find cycling gear for those looking for the best that Europe has to offer. We stock everything from road and cyclocross bikes to cycling and lifestyle apparel, frames, components, wheelsets, accessories and many hard to find small parts.

Our top brands include Castelli, Campagnolo, Cinelli, Colnago, Deda Elementi, KASK, Nalini, Selle SMP, Sidi and Bianchi Milano just to name a few. Our goal is to provide our clients with the equipment, guidance, and friendly expert service to make the most of their cycling experience.

SHIPPING

NONSTOP CICLISMO ships worldwide. You will receive an order confirmation email as soon as your order is processed and payment is received. You will receive a follow up email with the shipping information once your order has been shipped.

COMBINED SHIPPING

NONSTOP CICLISMO offers shipping discounts on all multiple purchases, basing the cost on the largest/heaviest item to ship plus $1 per each additional item (Due to size, water bottles ship at an additional $2 each). Follow the steps below to receive combined shipping: Select the items that you want by clicking the “Buy It Now” for each one. Do not pay for them individually. Once you have selected all the items you may send an email requesting the total for you items. We will combine your purchases and send you an invoice which you may pay through Paypal.

Occasionally the shipping charge is calculatedly incorrectly by the eBay Shopping Cart. We check all incoming orders to ensure shipping is charged appropriately. If you have been overcharged during the checkout process we will refund the overpayment directly to your Paypal account when we process the order.

SHIPPING TIME

Items are typically shipped within 1-3 days of purchase. When your item has shipped, you will receive a notification email containing the shipping details. With this number, you have 24-hour access to monitor the progress of your package via the website of the shipping provider for the following services: UPS (all services) USPS Priority Mail (Domestic) USPS Express Mail (Domestic) USPS International Express Mail. International orders shipped via USPS International Priority Mail do not received full tracking information *(see below INTERNATIONAL SHIPPING).

Please note that once we have delivered the package into the hands of USPS, NONSTOP CICLISMO is not responsible for the delivery time or arrival of the package.

DOMESTIC SHIPPING

Shipping is available via UPS / USPS First Class and Priority Mail. Expedited shipping is available for additional charges. *Free shipping for domestic orders over $100 shipped to contiguous 48 states *(exceptions are larger items such as bicycles, trainers, travel cases and framesets).

INTERNATIONAL SHIPPING

Shipping is available via USPS International Priority or International Express Mail. The USPS website does not offer comprehensive tracking information for the Priority Mail service. If you require full tracking for the package we recommend the Express Mail service - its well worth the additional price for reliability of the service alone. We've discontinued offering the USPS International first class shipping as we had many packages not reaching their destination. Orders shipped via USPS International Priority mail typically arrive within 6-10 days after shipped. We have, however, experienced delivery times of up to 6 weeks due to delays postal networks and customs. USPS International Express mail service costs a bit more than Priority Mail but it is fully trackable and takes approximately 3-5 business days to arrive.

INTERNATIONAL SHIPPING - IMPORT DUTIES

Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine these additional costs BEFORE bidding/buying. These charges are normally collected by the delivering freight (shipping) company or when you pick the item up; do not confuse them for additional shipping charges. International Priority Mail service should normally arrive within 6-10 days after shipped. We have, however, seen packages take up to 6 weeks due to delays in customs (this service does not provide tracking information). USPS International Express Mail normally arrives within 5 days and is the only trackable service. PLEASE NOTE THAT CUSTOMS WILL DELAY SHIPPING.

CHECK-OUT PROCESS

Click the Buy It Now button at the top of this listing to proceed to checkout and process payment for your item. For multiple purchases: Once you have made your selections you may send an email requesting the total for your order prior to payment. We will combine your purchases and applying appropriate discounts and send you an invoice which you may pay through Paypal.

SALES TAX

Sales tax for all orders is accessed and added where applicable by eBay.

RETURNS

Please refer to individual listing for item specific return policy. Items from our closeout category are sold “as-is” and are not eligible for return. Items on markdown may be returned for store credit. NONSTOP CICLISMO accepts the return of unused merchandise in its original packaging with tags attached up to 30 days from the date of purchase, Items not sold on closeout or markdown may be returned for exchange, store credit or refund. Returns for a refund are subject to a deduction if the items returned are not received in brand new condition as shipped. A copy of the original invoice must accompany your return. All returned merchandise must be in new and unused/uninstalled condition. PLEASE ALLOW 2-3 DAYS FOR RETURNS AND EXCHANGES TO BE PROCESSED.

FEEDBACK

If for any reason you feel that your order or our service did not meet your expectations please contact us so that we can make it right for you!