Description
The first product from SimWorks by TANGESEIKI
TANGESEIKI manufactures everything from bearings in-house, creating products with extremely high precision and durability. Among the top-of-the-line Technoglide series, Sim Heads is an original SimWorks headset based on the "Classic" model, which boasts the highest durability and precision.
The stainless steel bearings used in Sim Heads have a cutting precision of ±0.004mm and a mirror-polished ball contact surface, which, combined with the angular contact structure, achieves high rotational performance and durability.
The crown race and top cap are also made from ultra-super duralumin A7075-T6, which is lightweight yet extremely strong and hard, further improving durability and maintaining a beautiful, unified color.
Before the rider even thinks, "I want to turn," the bike is already moving in that direction. Like Zen, which values the "moment when mind and body melt into one," Sim Heads eliminates the boundary between thought and control, seamlessly transmitting impulses from the brain to the body and from the body to the bike, unconsciously tracing the path of the bike. You'll experience the precision with which this alignment between intention and action is achieved.
[FEATURE]
- Based on Technoglide Classic, which combines the highest precision and durability
- The entire product, including the crown race and top cap, is made from ultra-super duralumin A7075-T6 material.
- Stainless steel angular contact structure bearing that distributes loads from above, below, left and right
[SPEC]
| Color: | Silver, Black |
| material : | A7075-T6 Super Light Alloy |
| Bearings: | Shield Bearing |
| size : | 1-1/8" (SHIS EC34/28.6 | EC34/30) |
| Column size: | 1-1/8" (Φ28.6mm) |
| Stack Height: | 28.5mm |
| Weight: | average 97g |
| Made in Japan |
*As stated in the included manual, "reaming" and "facing" may be required to adjust the frame's precision when installing. Using this product on a head tube designed for a threaded headset or a frame with thin walls may result in cracks or damage.
- Orders are shipped within 1–2 business days after payment is confirmed. Orders placed by 10:00 AM are generally shipped the same day.
- Messenger delivery is available within Nagoya City only (excluding complete bikes and framesets).
- We ship every day from Monday through Sunday, except on temporary closure days.
- Shipping destinations: throughout Japan and worldwide.
- Shipment may be delayed depending on credit card processing. If you would like to request a delivery date or time, please add a note in your cart.
- All orders are shipped from Circles.
- For damage or loss during transit, please contact the carrier.
Complete Bike Shipping within Japan
- A shipping fee of ¥9,900 (tax included) applies to complete bikes. Additional charges may apply for Okinawa and remote islands.
- After purchase, we perform a final inspection before shipping. Please allow 1–2 weeks in some cases.
- For packing, some parts may be removed. We strongly recommend having the bike reassembled and checked by your local bicycle shop before riding.
- We will contact you by email with delivery details.
- Products are also sold in-store, so availability may change before the order is finalized.
Frameset Shipping within Japan
- Flat-rate shipping within Japan: ¥5,500 (tax included). Additional charges may apply for Okinawa and remote islands.
- Shipping rates for OMNIUM framesets and complete bikes differ.
- We will contact you by email with delivery details.
- Facing and tapping preparation for framesets purchased from Circles is available at no additional charge. Details will be provided after purchase.
- Headset and bottom bracket installation are also available for an additional labor fee. Please contact us if required.
Custom & Stock Wheel Shipping within Japan
- A shipping fee of ¥2,000 (tax included) applies. Additional charges may apply for Okinawa and remote islands.
- Stock wheels undergo a final inspection by a mechanic before shipping. Please allow approximately 3 business days for dispatch.
For international orders, shipping costs vary by destination. Please check the amount shown at checkout.