Simplicity in both form and function is the reason for the Circuit clamp's beauty. The secret is in the details for Deity and this little package is no exception. Deity rounded all of the edges, minimized as much material as possible, and designed a clamp with the perfect touch of refinement and style. Available in a high polished finish in their full range of ano color options and sizes... this little gem is the perfect finishing touch for your Deity kit!
Please reach out to us with any questions you may have about anything we sell. We want to make sure you get the right items the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!
We currently offer both economy and expedited shipping options through FedEx and USPS.
Most orders totaling over $69 before tax are eligible to ship for free via an economy ground option of our choice.
Due to larger box sizes, handlebars, wheels, and other oversized items, an additional shipping fee will be applied.
Most bikes ship for only $200 within the continental US. Bike shipping to AK, HI, or PR is usually $350, but may incur additional fees depending on the exact delivery location.
If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee, depending on your location.
Should there be an issue with the item you bought, or if you no longer need your purchase, we will be happy to set up a return.
Returns may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items that have been installed or show wear of any kind.
Returns or exchange requests for bikes must be requested by emailing us at sedona@thundermountainbikes.com within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes incur a $200 restocking fee, and the customer is responsible for the return shipping costs.
Customers are responsible for return shipping fees and may choose the carrier of their choice to handle their product return. We no longer provide shipping labels directly.
For any return shipping questions, please email us at sedona@thundermountainbikes.com after submitting your return request so that we can confirm the shipping information you should use to return your item(s).
We will process your return after receiving your returned item(s) and inspecting their condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed. All refunds will be returned to the original payment method. No store credit or other refund methods are available.
If you receive defective or damaged products or if we sent you the wrong item(s), please contact us using the phone number or email below.
To request a return, please log in to your customer account by clicking the 
Profile icon in the top right of any page or visit account.thundermountainbikes.com.
1. In the Email field, enter your email address and click Continue.
2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.
3. Go back to the online store and enter a six-digit verification code to log in.
4. Find and click on the order you want to submit a return for.
5. If your order has more than one item, select only the items you want to return.
6. Select a return reason and add a note for the store if needed.
7. Click Request Return.
Once your return request is approved, you will receive a confirmation by email.
If you have any questions concerning our return policy, please contact us at:
Needed a silver Deity clamp for the new build .
Nice style, color matched my bike and right size fit😀
Great
The clamp was a perfect fit and the color matched the picture. Good price and fast shipping!
Love the color of the clamp
Just the perfect custom touch my bike needed “ totally satisfied.
Perfect
Amazing. Looks good. Easy to install. Great quality and fast shipping.
These guys saved my day fixing a couple of things" on my bike after a big crash at "Outer Limits, they had all parts in stock and fixed it for next morning ride. I keep buying from them to show my gratitude and they keep giving me a great and fast service.
I love it! Well made and a nice pop of color!
Fit and finish of my 38.6mm seatpost collar in red are great. The anodized color really pops, matches the red copperhead stem perfectly, and actually looks better than the pictures. I also like the oversized bolt.
Shipped pretty quickly, always got updates on tracking. Fits perfect, great quality and looks good! Will order from them again for sure.
These guys are Fantastic.
The part was shipped out quick, had all the tracking information. Not a issue at all!
Will definitely order from them again.
Circuit Seatpost Clamp
Great looking Deity clamp, that matches my stem.
Very fast shipping, great to do business with
Looks great, and most importantly actually holds my dropper post in place. The Thompson clamp I had before also looked nice but I couldn't torque it down enough with the tiny 3mm bolt. I was having to use beer can shims to keep it from sliding down. This one has a 6mm bolt which I can torque much more, and holds the post in place really well
I’m very impressed with this product.
I also will like to mention, the great customer service I get every time I order product from you guys.
Light weight, holds tight, looks good. It checks all the boxes a seat clamp should. Ordering from Thunder Mountain was just as great as last time. Fast shipping, even on a weekend , these guys don’t sleep!
The seat clamp is as expected. Delivery was very quick. I accidentally placed two seat post clamps in my cart and emailed thunder mountain bikes to request to cancel one of them- within minutes of emailing (on the weekend, none the less) it was refunded and taken care of. EXCELLENT customer service.
I have a road tandem that had issues with seatpost slippage on the captains post. The stoker stem/ handlebars attach to the captains post which adds to the load and forces the clamp has to withstand. It’s an aluminum frame which has a shim for the aluminum post and I couldn’t stop the slippage from occurring no matter how much I torqued the bolt. I even snapped a titanium bolt in an attempt to get enough clamping force. The clamp and bolt were just too light for this application. No so with this clamp. The bolt is larger and the clamp is heavier which allowed me to easily get enough torque such that there is no slippage whatsoever. Highly recommended if you need a good strong clamp that also a good value.
Circuit Seatpost Clamp
Circuit Seatpost Clamp
Great buy
Looked everywhere for my Bronze Deity seat post clamp! Thankfully Thunder Mountainhas what you need.
