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.

The Problem Solvers Locking Headset Spacer is handy during headset servicing for keeping the fork in place when the top cap and stem are removed. It's also great for keeping the fork in the frame when you're shipping your bike in a box, which usually requires removing the stem and bars. This quality piece is for 1 1/8-inch forks and is CNC machined of light, durable 6061 aluminum and has a stainless-steel bolt.

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.

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.

- Clamps to a threadless steerer, offers up to 3-1/4" stem height increase - Forged 6061 aluminum - Threaded alloy top cap

If you've got rear-facing horizontal dropouts and you don't want your chain to slip when your rear wheel pulls forward, then Surly's got you covered. The Tuggnut is made from investment-cast stainless steel and it'll hold your wheel in place. Plus, it comes with an adapter for quick release axles and features an integrated bottle opener.

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.

Hurdy Gurdy is another nifty device that keeps a rear wheel from slipping forward in the dropout under pedal load. It's designed for the Cross-Check's semi-horizontal front-loading dropouts, and will also work on many other similar dropouts. Hurdy Gurdy is investment cast of stainless steel for durability and good looks, and shares many of Tuggnut's design features. Its two axle holes allow for a wide variety of fore/aft wheel positions, it will work with standard QRs, bolted axles, and nutted axles up to 10mm.

- Compatible with Shimano, SRAM, Campagnolo and KMC 11 speed chains - DLC Coated - Non-reusable - Opening Tool Required - Card of 2 pairs

In the race against the clock, Bontrager's Race Lite Clip-On Aerobars S-Bend give you the advantage you need. Adjustable arm rests and extensions allow you to dial in your profile position so you can comfortably stay in a wind-slicing tuck. And the internal cable routing keeps everything out of the wind, nice and neat.

- Quiets chain slap and protects chainstays from nicks and scratches - Standard protector fits most chainstays - Universal kits come with circle protectors to eliminate frame damage due to cable rub

Whether for derailleur clamp clearance, tire clearance, or personal preference, sometimes it can be advantageous to run the wheel further back in the dropouts. Monkey Nuts install into Surly horizontal dropouts to make spacing the wheel back easy. There are 3 different sets depending on the type of dropout and axle configuration the dropout is intended for. Simply select the correct version of Monkey Nut, install it into the frame, and slam the wheel all the way forward. Bang, done.

Clean up your Bontrager Elite stem cockpit with Blendr Elite bases. Blendr works with this simple formula: Stem + Base + Mount. Add accessory. Key features: - Bases for use with Elite stem - Add any XXX accessory mount for an elegant integrated look

The SRL LE lever gives riders with one-by drivetrains an affordable option to control their Command Post with a lightweight lever option that mounts beneath the bar in place of a front shifter. - Command Post lever for the modern one-by drivetrain systems. - Injection molded lever is light, durable, and features a textured design for added grip. - High quality bushing design provides smooth lever action. - Ideal pull ratio for easy lever activation. - Requires additional mounting hardware (SRAM MatchMaker or equivalent is recommended).

The Problem Solvers Cable Doublers are made of light, durable machined and anodized aluminum and they are Teflon coated for a super-smooth cable pull every time. They come in two models. The first allows you to control two brakes with one lever. The second allows you to control one brake with two levers. Why? Well, there are myriad applications: tandems, cyclocross bikes, fixies, tricycles, recumbents, cycles for those with special needs, bike polo bicycles, those 4-person bikes you see on beach boulevards, and so on. You could even link both models of Cable Doublers together for the ultimate in redundancy!

Key features: - Original equipment replacement saddle ears for use with Bontrager saddles with carbon rails - Compatible with Bontrager and Trek rotary head seatpost and seat mast systems - Consult with manufacturer on compatibility with other saddle brands

The Problem Solvers Quick-Release Nut Light Mount is an ingenious solution when your handlebars are too crowded to accept a light. This fine CNC-machined aluminum post simply screws on in place of your left, front quick-release nut to provide a great place to mount your light. Lower light mounting improves your depth perception and shows more details of the road condition ahead, too.

A well-exercised dog is a happy dog, so give Fido a good workout while you ride! Sunlite's Dog Leash consists of a metal bar that mounts under the rear axle bolt or quick-release and straps to your chainstay. This keeps the center of gravity low so you stay stable if your dog pulls to one side. The bar is long enough to keep your pup away from the bike, too.

These bar end adapters are required if you wish to add clamp-style bar ends to your Bontrager Satellite Plus Isozone handlebars. • Required for bar end use on Satellite Plus Isozone bars • For use with clamp style bar ends • Bar end sold separately

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.

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

When you need to move your handlebars up, install Sunlite's Chromoly Quill Stem Extender. One end goes inside the steerer tube and your quill stem inserts into the top. It provides 8 1/4 inches of rise and is compatible only with quill stems and steerer tubes.

Wheels Manufacturing Wide Chainstay Protector w/ Alcohol Prep Pad keeps your frame's paint looking good and helps quiet any chain slap on the chainstay. Wide design offers extra coverage for larger chainstays.

- Durable custom-molded plastic guard - Co-molded rubber exterior to help quiet chain-slap noise - Easy installation and removal

The Ohlins Stumpjumper Spring sets a new benchmark for spring rate accuracy and light weight for steel springs. - Ultra-fine spring rates to ensure perfect set up for all weights. - Spring rates are broken down to 4 N/mm (23 lbs./in). - Fits Ohlins TTX shock absorber for Stumpjumper FSR only. - Made with proprietary ultra lightweight steel, it's incredible for keeping your build weight down for trail riding.

The new generation spring series features a race-ready weight with big mountain strength. You'll also find advanced technologies that feature a multi-step surface treatment process, as well as cutting-edge heat treatments. Lastly, we use wire materials that allow us to stress the wire harder, without causing damage to the spring, and therefore design lighter springs. - Precise spring rates are broken down to 4 N/mm (23 lbs./in).

This minimal ISCG 05 chain guide is designed to promote pedaling efficiency and low drivetrain drag while keeping the chain securely on the chainring through rough terrain.

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (3) M4x8 Flat Head Screws Note: This dropout can be used in place of Wheels Mfg DROPOUT-248. The only difference is the number of fasteners.

Single chainring drive train setups are all the rage these days. With the introduction of exceedingly wide range 10- and 11-speed cassettes, the need for two chainrings has become a thing of the past. But when you only have one chainring, the only thing standing between you and a long walk back to the trailhead is you making sure you don't destroy your one chainring. That's why Surly made a chainring guard to fit O.D. cranks. It is made of aluminum and will take the hit for your chainring. It comes in 5 bolt, 94mm BCD and was designed to protect 22t – 30t rings.

- Replacement slider for the Surly Tuggnut and Snuggnut