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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.

- Allows quick chain removal without tools - MissingLink 410HD|~|1sp|~|BMX Heavy Duty chain|~|9.4mm|~|each|~| - MissingLink 410|~|1sp|~|BMX|~|8.6mm|~|each|~| - MissingLink II|~|8sp|~|all|~|7.1mm|~|6/card|~| - MissingLink-9|~|9sp|~|all|~|6.6mm|~|6/card|~| - MissingLink-10R|~|10sp|~|KMC, Shimano, SRAM|~|5.9mm|~|6/card|~| - MissingLink-10CR|~|10sp|~|Campagnolo only|~|5.9mm|~|6/card|~| - MissingLink-11|~|11sp|~|Campy, KMC, Shimano|~|5.5mm|~|6/card|~|

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

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.

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.

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 SRL lever gives riders with 1x drivetrains the option to control their Command Post with lever option that mounts beneath the bar in place of a front shifter. - Command Post lever for the modern 1x drivetrain systems. - Adjustable lever position allows for the perfect set up. - Sealed cartridge bearing pivot for smooth action. - Ideal pull ratio for easy lever activation. - Requires additional mounting hardware (SRAM MatchMaker or equivalent is recommended).

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.

Rated fully KICKASS by a very authoritative entity who will remain unnamed, Surly's cast and polished stainless steel clamps won't rust or chip paint because they can't (even the black ones!). They're shiny! They look good! And most importantly, they deliver the clampability seatposts crave.

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

- Replacement pads & holders w/ Velcro; for Specialized Carbon Aerobar or Specialized Hydroformed Alloy Aerobar

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).

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (1) M8 Chainring Bolt

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (1) M8 Chainring Bolt

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Norco part #959375-16-1 - (1) M8 Bolt for DROPOUT-276 included Notes: - For use with direct mount Shimano Saint rear derailleur. - If using direct mount Shimano XTR, XT or SLX rear derailleur, use Wheels Mfg DROPOUT-275. - If using any non-direct mount rear derailleur use Wheels Mfg DROPOUT-202.

- Off-setting shims to use with Specialized Multi-position Stems

These jockey wheels use durable stainless steel ball bearings to improve drivetrain performance. They are ideal for cycling in the rain, or for demanding conditions such as mountain biking or cyclocross. They are lubricated with grease and maintenance-free.

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 Top Cap Assembly on your Reverb contains a dust wiper and bushing. These parts need to be in good shape for the continued smooth operation of your Reverb. This top cap includes the cap, dust wiper, and bushing. - Fits A1 and A2 generation seatposts - For "A1" designated posts, 2010-2012 - A1 posts have a silver return speed adjuster on the remote and no laser-etched logos on stanchion by the saddle cradle - For "A2" designated posts, 2013-2016 - A2 posts have a black return speed adjuster on the remote and no laser-etched logos on stanchion by the saddle cradle

Profile Design's UCM XL Universal Computer Mount provides a convenient 60mm-long place to mount your computer on your aero bars. It installs without tools, stays put and can be positioned as needed for easily viewing and controlling your computer.

The Problem Solvers Universal Derailleur Hanger is a handy thing to keep on hand (and even bring on epic off-road rides or extended tours) because it makes it relatively easy to fix a damaged/bent derailleur hanger, which is a pretty common breakdown. This CNC-machined 6061-aluminum hanger takes the place of the drive-side quick-release nut providing a straight hanger to mount your derailleur to. You'll still be able to shift into many of your gears, too.

- CNC machined aluminum alloy - Fits 26.8mm (1-1/8-inch) steer tube

- Alloy construction - Great for Cruiser or BMX bar conversions

Zipp Speed Weaponry Cartridge Bearings

- CNC machined 6066-T6 alloy - Ultra light double alloy nut design - 14mm clamp height

Zipp’s Vuka Alumina Clip Extension Mounts/Armrests are made of light, strong, stiff 2014-series aluminum and have nylon armrests with wide, comfortable foam pads. They're perfect for mounting your favorite extensions (sold separately) and finding your optimal aero position. There's also a model that goes above and beneath your base bar.

Shimano Di2 STI lever hoods. - Fits Ultegra ST-6870 Di2 levers only

Original equipment rear derailleur pulleys for SRAM rear derailleurs. Fits X01, X01DH, X1, GX 1x11, NX, Force CX1, Force 1, Rival 1, Apex 1 Derailleurs. - Wide-narrow pulley tooth profile holds the chain better - Stainless steel sealed cartridge bearings

Zipps' Vuka Alumina Clip Risers work with the Vuka Alumina Above-Bar Clips (sold separately) and let you raise your armrest height. They're made of sturdy, lightweight aluminum and come in 10mm, 25mm, and 50mm sizes.