Threadless Stem Shim Adapter 1-1/8 inch to 1 inch – Black Anodised, Aluminium Split Shim
Upgrade your bike with our Threadless Stem Shim Adapter, designed to convert a 1-inch (25.4 mm) steerer tube to a 1-1/8 inch (28.6 mm) dimension, enabling the use of a wider range of stems. Made from durable split aluminium, this shim ensures a secure fit and seamless integration with your bike’s existing components. The black anodised finish with laser-etched details not only enhances its aesthetic appeal but also adds to its durability.
Our stem shim adapter is an essential accessory for cyclists who seek greater flexibility in their handlebar setup. Whether you’re upgrading your bike or need a reliable solution for custom builds, this adapter provides the versatility and strength you need. Easy to install and engineered for precision, it guarantees a snug fit and optimum performance.
Don’t compromise on your riding experience. With our Threadless Stem Shim Adapter, you can enjoy the benefits of a wider range of stem options, improved control, and enhanced bike handling. Ideal for both amateur cyclists and seasoned riders, this adapter is your key to a smoother and more comfortable ride.
Designed with meticulous attention to detail, this stem shim adapter meets the highest standards of quality and performance. Its split design makes installation a breeze, while the aluminium construction ensures it withstands the rigors of everyday cycling. The black anodised finish not only looks sleek but also resists wear and corrosion, ensuring your bike stays in top shape for longer.
Experience the difference with our Threadless Stem Shim Adapter and take your cycling to the next level. Whether you’re on the road, trail, or commuting through the city, this adapter delivers unmatched reliability and versatility.
Features:
- CONVERTS DIMENSIONS: Seamlessly converts a 1-inch (25.4 mm) steerer tube to a 1-1/8 inch (28.6 mm), expanding your stem options.
- HIGH-QUALITY MATERIAL: Made from durable split aluminium for strength and longevity.
- EASY INSTALLATION: Split design allows for quick and effortless installation.
- ENHANCED DURABILITY: Black anodised finish resists wear and corrosion, ensuring lasting performance.
- PRECISION ENGINEERING: Laser-etched details provide a precise fit and stylish look.
- VERSATILE USE: Ideal for a variety of cycling needs, from road biking to mountain biking.
- IMPROVED CONTROL: Allows for better handlebar control and customization, enhancing your riding experience.
Bike & Ride
Premier Pre-Assembled Bike Delivery Service to anywhere in the UK
Finance Options
With the Option to spread the cost over a term - subject to approval and limits
Cycle Scheme
Option to purchase it under the Cycle to Work Scheme via your Company
Two Free Bike Servicing
Get your Bike serviced twice within the first year, Completely Free!
FTB Maintenance Membership
Get 1-Year Membership for Free, Access to Servicing & Accessories Discounts
Download Bike Specifications
View or Download information & specifications for this Bike
Bikes Delivery Information
Bike & Ride – The Premier Option for You
Fix This Bike is proud to be one of the few online bike retailers in the UK offering a delivery service that guarantees your bike arrives fully assembled and ready to ride. Our premier delivery option, ‘Bike & Ride,’ is available for just £70 per bike and ensures that your biking experience starts effortlessly and smoothly.
With ‘Bike & Ride,’ your new bike will arrive in a specially designed bike box with minimal packaging, ensuring protection during transit while reducing environmental impact. Included are all the necessary tools, so you can start riding within minutes of delivery. Our commitment to sustainability means we avoid using foam, bubble wrap, and zip-ties, opting instead for eco-friendly packaging. We encourage you to recycle any materials where possible, contributing to a greener planet and giving you the added satisfaction of making an environmentally responsible choice.
Bike & Ride for Standard Bikes
For standard bikes, our ‘Bike & Ride’ service ensures that each bike undergoes meticulous assembly and rigorous quality checks by our expert bike builders. This attention to detail guarantees that your bike meets the highest standards of safety and performance. To facilitate this thorough process, bicycles are not eligible for next-day delivery, ensuring each bike is perfectly prepared for you.
Bike & Ride for E-Bikes
Due to the additional weight and unique handling needs of electric bikes, we cannot ship them fully assembled. Instead, our expert mechanics will assemble, configure, and thoroughly inspect your electric bike before repacking it in its original box. This process requires the removal of the front wheel, handlebars, pedals, and seat-post, which you will need to reinstall upon delivery. We provide detailed instructions and all necessary tools to help you complete the assembly quickly and effortlessly.
Experience the unmatched convenience and quality of ‘Bike & Ride’ by purchasing your bike from our online shop. With Fix This Bike, you’re choosing a service that prioritises your riding experience, environmental responsibility, and exceptional quality from the moment you receive your bike.

Next Day Delivery
To ensure proper assembly and quality assurance by our expert bike builders here at Fix This Bike, bicycles are NOT eligible for next-day delivery.
Bike Delivery Costs
- Standard Delivery: £25
- Bike & Ride Premier Delivery: £70
- Remote Delivery Surcharge: £20
Bike Handling
- Next Day Delivery: Unavailable due to our Quality Assurance Guidelines
- Order Processing & Dispatch: 1-3 Working Days
- Delivery Timeframe: 2-9 Working Days











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