RD-R8150 (ULTEGRA)
RD-R8150 (ULTEGRA)
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Item number: SKU:oty-4550170240967(-25261124)
■ Domestic Shipping Fee Estimate
Overview
The SHIMANO RD-R8150 is the 12-speed Di2 rear derailleur for the ULTEGRA R8100 series. With 58% faster shifting performance than previous models and a wide-range design compatible with up to 34T, it provides comfortable and precise shifting for everything from racing to long-distance rides.- Product Description
- Returns, Delivery & Shipping
SHIMANO RD-R8150 (ULTEGRA) | Shimano's Fastest Shifting 12-Speed Di2 Rear Derailleur
ULTEGRA Di2: Less time thinking about shifting, more time focusing on your ride.
The "RD-R8150" from the SHIMANO ULTEGRA R8100 series is the core rear derailleur of the 12-speed Di2 system.
Achieving approximately 58% faster rear shifting compared to the previous generation, it reacts instantly to rider input. It delivers smooth and accurate shifting performance even under load, such as during climbs, high-speed cruising, or sprints.
By integrating the wireless unit, charging port, and switch into a compact body, it offers both a clean appearance and easy maintenance. Furthermore, its wide-range design, compatible with up to 34T, caters to a broad range of uses, from race-oriented setups to long-distance rides and hill-climbing specifications.
This Di2 rear derailleur, inheriting the shifting performance and reliability of the higher-end DURA-ACE, is set to become the new standard for modern road bikes.
Features
- 12-speed Di2 rear derailleur compatible with ULTEGRA R8100 series
- Rear shifting approximately 58% faster than previous models
- Compact design integrating wireless unit, charging port, and switch
- Wide-range design compatible with up to 34T sprockets
- Equipped with LED status indicator
- Easy to check battery level and pairing status
- Adopts SHIMANO SHADOW RD design
- High durability with fluorine-coated link bushings
- Supports both wired and wireless Di2 connectivity
- Suitable for a wide range of uses, from racing to long rides
SPEC
- Series: ULTEGRA R8100
- Model: RD-R8150
- Compatible speeds: 12-speed
- Max front difference: 16T
- Total capacity: 39T
- Max low sprocket: 34T
- Min low sprocket: 30T
- Top sprocket: 11T
- Mount: Direct mount / Direct mount compatible
- Spring type: Top-normal
- Design: SHIMANO SHADOW RD
- Average weight: Approx. 262g
Many riders who use the R8100 generation Di2 are often surprised by the speed of its shifting response.
It feels as if the shift is completed the moment the lever is pressed, maintaining your riding rhythm whether you're climbing or on flat terrain. This lack of stress is a major advantage, especially during long rides.
Its compatibility with up to 34T sprockets makes it versatile, suitable not only for race-oriented gear configurations but also for hill climbs and audax events. Its all-around adaptability is a key selling point.
This is a reliable, standard model to choose when adopting Di2, and it's a central ULTEGRA component that strikes an excellent balance between performance and price.
◆Returns and Exchanges
Please inspect your order as soon as possible after it arrives.
- Parts, apparel, accessories, and other cycling goods may be returned or exchanged. Return and reshipping costs are covered either by the customer or by our store, depending on the circumstances.
- Complete bicycles cannot be returned or exchanged for reasons of customer preference. We will only accept returns in the event of a product defect or damage during delivery.
▶ View our Return and Exchange Policy
◆“In-store Stock” and “Special Order” Items
- “In-store Stock” items are currently available at an Eirin store or in our warehouse. Each item will be inspected before being dispatched.
- “Special Order” items are ordered from the manufacturer or an authorized Japanese distributor. After the item arrives, we conduct a final inspection before dispatch.
※If “In-store Stock” is unavailable, please select “Special Order.” We will contact you by email once the item has arrived from the supplier.
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◆From Order to Delivery
※① If an item is out of stock, we will contact you by email and ask whether you would like to change or cancel the item.
※② Items cannot be added, changed, or cancelled after the order has been confirmed.
※③ Once your order has been dispatched, we will email you with the shipping confirmation and tracking number.
◆Shipping Carrier
Orders are generally shipped by Seino Transportation.
Another shipping carrier may be used depending on the contents of your order or the delivery area.
◆Pickup at Eirin Stores in Kyoto City
- Shipping is free when you collect your order from one of our street-front stores in Kyoto City.
- Complete bicycles generally require approximately 1-2 weeks for assembly and inspection before pickup.
- Some parts and apparel are stored in our warehouse and may require approximately 1-5 days before they are ready for pickup.
※Due to system limitations, the following payment methods are available for store pickup orders:
Shop Pay, Credit Card, Bank Transfer, and JACCS Financing
Customers wishing to use another payment method should select standard delivery instead of store pickup.
◆Pickup at a Seino Transportation Branch
※Shipping for complete bicycles is free when the bicycle is collected from an eligible Seino Transportation branch.
- This service is available only for complete bicycles. Parts, cycling goods, apparel, and accessories are not eligible.
- For purchases under ¥55,000 including tax and excluding payment fees, the shipping charge is reduced to half of the standard rate.
- Different charges apply to Hokkaido, Okinawa, and remote islands. These charges are still lower than residential delivery rates.
▶ List of Seino Transportation Branches
◆Shipping Fees
The total shipping charge for your order will be calculated automatically and displayed at checkout after you enter your delivery address.
