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The Problem Solvers Cassette Spacers are made of light and durable anodized aluminum and come in different thicknesses for correctly spacing various brand and model cassette cogs. Measure and match your spacers to choose the right width.

Shimano's In-Line Brake Cable Adjuster with quick release allows you to make changes to your road caliper brake's cable tension or open a brake caliper's arms to remove a wheel.

The Problem Solvers Handlebar Clamp Shim allows you to fit almost any handlebars in almost any stem. It's machined of light and durable aluminum and grooved on the inside to hold tightly.

Be safe out there. Evo's Canadarm Barend Mirror is bar mounted for ease. Its flexible positioning allows ideal rear visibility, perfect for commuters.

Profile Design's F-19 Lux Pads fit onto their F-19 armrests (sold separately) and provide additional comfort at a gossamer weight of only 26 grams per pair. Made of Lycra-covered, 21mm-thick EVA foam, these cushioned, supportive pads also sport Velcro straps for easy installation.

Profile Design's Lux Pads keep both performance and comfort high, exactly where they need to be when you're pushing your boundaries. These velcro backed pads fit Profile Designs F-35 armrests (sold separately), and feature EVA foam, an anti-microbial cover, and a contoured edge for improved long-term comfort. They're even available in three thicknesses so you can dial in your fit to perfection.

Light, comfortable, and stable, Profile Design's F-35 TT Armrest Kit provides excellent adjustability for finding your perfect position. These versatile aluminum fiber armrests have an ergonomic shape, 15 degrees of rotational adjustment, and 3 fore/aft positions with a total of 30mm of adjustment. The minimalist EVA foam pads mount with Velcro backing and feature a textured finish that prevents slipping. The pads also have contoured edges for additional comfort and they're even antibacterial.

Light, comfortable, and stable, Profile Design's F-19 Armrest Kit provides excellent adjustability for finding your perfect position. These versatile aluminum armrests have an ergonomic shape, 15 degrees of rotational adjustment and 4 fore/aft positions with a total of 30mm of adjustment. The comfortable, Lycra-covered 16mm-thick EVA foam pads simply attach to the armrests with adhesive-backed Velcro so no straps are required. The pads also have contoured edges for additional comfort and they're even antibacterial. Includes mounting hardware.

Add a rack to your frame, even if you don’t have rack mounts. Allows standard rack stays to be bolted directly to the seat collar, for a clean and simple look. Made from lightweight aluminum for durability, with threaded inserts to bolt the stays directly into the seat clamp. - 35mm inner diameter fits all alloy Specialized MTB frame designs with 30.9mm posts and 35mm O.D. seat tubes. - 37mm inner diameter fits all carbon Specialized MTB frame designs with 30.9mm posts and 37mm O.D. seat tubes.

Power links provide tool free chain assembly. - Chain Compatibility: SRAM - Reusable: No

- Updated dual-ring chainguide design eliminates the lower roller reducing weight, noise, and complexity - S Line slider technology with o-ring ensures silent chain engagement - Updated polycarbonate bashguard features varying thickness material for increased strength - Smooth outer surface for easy cleaning and aluminum inserts at the chainring bolt holes to prevent damage during installation

- Updated chainguide design eliminates the lower roller reducing weight, noise, and complexity - S Line slider technology with o-ring ensures silent chain engagement - Updated polycarbonate bashguard features varying thickness material for increased strength - Smooth outer surface for easy cleaning and aluminum inserts at the chainring bolt holes to prevent damage during installation - ISCG and ISCG-05 mounting options - 34t-36t range - 4 bolt/104 BCD only - 180g

These are the correct connecting links for SRAM's 12-speed Eagle chains. They are great for installing new chains and fixing chains on the road and trail, too. They come in a four pack, for use with four chains.

Turn your geared bike into a singlespeed machine with Surly's Singleator. The Singleator mounts to your derailleur hanger and provides a smooth, quiet and adjustable means of tensioning the excess chain slack on any bike. It's made from strong forged steel and features a triple-sealed spring, large-cog capacity, chain guides, fully-adjustable chain line, floating pulley, and a stainless-steel pivot bushing. And, it works with both BMX and standard chains.

Pair this kit with a cassette cog of your choosing (sold separately) and discover the joy and simplicity of a singlespeed without the cost of a new wheel. The Singlespeed Spacer Kit includes a variety of high quality aluminum spacers so you can dial your chainline and a stainless steel lockring to tighten everything down right.

If you're suffering from a slipping seatpost, Surly has the remedy. The Constrictor Seatpost Clamp grabs your post tight and hangs on for dear life. It's machined from anodized aluminum billet, uses an 8mm bolt for ultimate strength, and can accommodate a rear cantilever brake hanger.

Don't let chain slap damage your frame. Install a Pro Chainstay Protector. For top protection and a custom look, it's made of heavy-duty carbon-coated neoprene. Plus, it has a Velcro closure so it's easy to put on and stays in place, and it can be removed for cleaning too.

One of the coolest things about Surly is if they can't find an existing part that fits their standards, they just make one themselves. This cable hanger is made to fit around the oversize bolt on their Constrictor seatpost clamp so you can be sure it will fit around almost any other seatpost clamp bolt too. It comes complete with an adjusting barrel.

Be safe out there. Evo's Edge Road Bike Mirror mounts to drop bars for rear visibility, perfect for commuters and riders who like to see what's going on at the back of the pack.

Be safe out there. Evo's Edge Supra Mirror mounts to drop bars for rear visibility. The screw-in plug stays secure and the adjustable angle gives you a good view. It's perfect for commuters and riders who like to see what's going on at the back of the pack.

Shimano's Di2 Battery Charger Cable plugs into the Battery Charger (shown, but sold separately) so you can keep your electronic drivetrain at full power.

The Problem Solvers BB30/Press-Fit 30 Adapter Kit consists of DuPont Delrin (a tough, light type of plastic) pieces that allow you to use your external bottom bracket-style crankarms (24mm spindles, such as a Shimano Hollowtech II crank) with newer BB30 and Press-Fit 30 bottom brackets. Please contact us if you have any questions about compatibility.

The Problem Solvers Cantilever Studs screw into the bosses built into bicycle frames to provide the proper mounting studs for brakes. Each brake requires two studs.

The Problem Solvers Clamp-On Cable Hanger is made of light, durable anodized aluminum and fits on bicycles with 1- and 1 1/8-inch forks. A cable noodle and guide are included.

The Problem Solvers Clamp-On Water Bottle Cage Mount makes it easy to carry a bottle on your handlebars so you can have even more refreshment on rides. It also comes in useful on frames without room for bottles, like smaller frames and some kid’s bikes.

The Problem Solvers Compression Plug for 1 1/8-inch Forks is for threadless aluminum and carbon forks. It fits tightly inside the fork and provides easy headset adjustment and a nice, clean look.

The Problem Solvers Cable Pulley is the correct replacement for their Cross Clamp pulley (Cross Clamp sold separately) and it will also work on most frames that have a mount for a pulley. You get the aluminum pulley and the brass bushing.

The Problem Solvers Cross Hanger is the perfect front brake cable hanger for your cyclocross bike with cantilever brakes. Designed for easy installation and maximum braking power, this light, durable aluminum piece comes in a version for headsets with standard spacers and another that's Interlok-compatible for Cane Creek headsets.

The Problem Solvers Inner Chainring Bolts include 5 of the special threaded chainring bolts that fit into the chainring nuts on your crankset to hold the chainrings in place (chainring nuts sold separately). This type is 16mm long and made of rustproof stainless steel.

The Problem Solvers GXP Spindle Adapter Kit lets you adapt a GXP crankset to a BB30 or Press-Fit 30 bottom bracket. It's used with the Problem Solvers BB30/Press-Fit 30 Adapter Kit, which is sold separately.