Rennen Infinity Bolts are the latest product developed out of the Rennen headquarters. Rennen took one of the simplest components on a BMX bicycle "The Chainring Bolt" and Rennen made it better.Rennen has done it again with the Infinity Bolt. A simple but
Rennen Infinity Bolts are the latest product developed out of the Rennen headquarters. Rennen took one of the simplest components on a BMX bicycle “The Chainring Bolt” and Rennen made it better.
Rennen has done it again with the Infinity Bolt. A simple but very effective shoulder just under the head of the bolt serves to distribute the load and make this the strongest Titanium 6AL-4V Chainring bolt on the market.
Chain Ring Bolt Lenghts
Regular: 6.2mm
XL:9mmChain Ring Nut Lenghts
Regular: 6.2mm
XL:9mm
While all other bolts on the market use a 5mm internal hex we chose 4mm to provide more material and increasing their strength further by 8.5%
At Rennen we like improving things that are not obvious and we believe we have achieved that with the Infinity Chainring Bolt.
Rennen are so confident in this design we are offering a lifetime warranty against breakage. That’s right break a bolt and get a new one.
For something as simple as a chainring bolt we ran this design through 97 CAD iterations, 22 CNC G-Code variations and numerous FEA simulations.
We purchase USA made 6AL-4V Titanium and produce these on a state of the art multiaxis CNC lathe in house. We do things this way because we have full control over our designs and production, and the alternative of ordering parts out of a catalog is unoriginal and boring.
Rennen stands by their designs and products, the quality shows.
Chainring Bolts use a 4mm/8mm allen wrenches for assembly.
Regular length has been optimized to work with most gear crank combinations.
XL is specifically designed for thick crank spiders like Answer Accelerator cranks.
Titanium Bolts come with 1oz of Finishline Ti-Prep anti seize packet.
We use Finite Element Analysis (FEA) to virtually test the design and rapidly iterate through concepts.
In this first Image we are showing in an exaggerated view what happens when a load is applied to the spider and transmitted through the gear. This is a design with no shoulder. Here you can see concentrated stress.
Our second image is demonstrating the effects of the shoulder. Notice how there is more distribution of stress and the regions of high stress are not as pronounced.
We look to improve designs that have been in existence for decades.
We have improved the Chainring bolt and we at Rennen hope you appreciate the effort.
At Our Store, we aim to deliver your orders as quickly and efficiently as possible. Below you will find everything you need to know about our shipping and delivery process.
Shipping Methods & Rates
We offer a variety of shipping options to meet your needs. The cost of shipping depends on the shipping method you choose, the destination, and the size of your order. Please refer to the shipping options available at checkout for more details.
Express Shipping: Delivery within 3-5 business days (next-day delivery for some locations).
International Shipping: Available to selected countries. Delivery time and shipping fees will vary based on destination.
Processing Time
Orders are typically processed within 1-2 business days from the time your order is placed. Please note that during peak seasons or promotional periods, processing time may be slightly longer.
Tracking Your Order
Once your order has been dispatched, you will receive an email with tracking information so you can monitor the status of your shipment. You can also check the status of your order in your account under “Order History.”
Delivery Times
Estimated delivery times vary depending on your location and the shipping method selected. For international orders, customs processing may cause delays, which are beyond our control.
Domestic Orders: Typically arrive within 3 business days.
International Orders: Delivery times may range from 7 business days, depending on the destination country and customs clearance times.
Lost or Damaged Packages
While we take great care to ensure your items are packaged securely, accidents can happen. If your order arrives damaged or you believe it’s lost, please contact us at customer service email or phone number within 7 days of receiving your package. We will investigate the issue and provide a solution.
Contact Us
If you have any questions or concerns about shipping and delivery, don’t hesitate to contact our customer support team at customer service email or phone number. We’re here to help!
Thank you for shopping! We appreciate your business and strive to provide you with an exceptional shopping experience.
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