Description
*350mm will be in stock around May.
SimWorks by Nitto's new seat post is named "Froggy / Froggy" because of its frog-like facE
The new seat post is designed to provide a secure fixation with two fasteners
・Two offsets, 23mm and 0mm
・Total lengths of 300mm and 350mm
The role of the seat post is to support the saddle in the proper position. Of the three points that the rider comes in contact with (handlebar, pedals, and saddle), the saddle position is the key element that serves as the base point for powerful and efficient propulsion, so it is an uncompromising part that requires unwavering fixation, whether off-road or with a heavy rider.
Froggy seat posts are available with Nitto's It uses the same two-tightening yagura construction as the NJS standard product, which was designed for bicycle racing and has a long track record. It has the ability to grip the rails very firmly and will not shift no matter how hard you ridE Adjustment is also easy.
SPECifications
| Color | Silver & Black |
| Material | Forged Aluminum |
| Post Diam | 27.2mm dia. |
| Length | 300mm & 350mm |
| Offset | 0mm & 23mm |
| Weight | 315g (300mm), 345g (350mm) |
Carbon rails are not compatiblE
- 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.

























