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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.

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 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!

These simple clamps allow riders to mount I-Spec II compatible shifters or dropper levers onto their bars without the otherwise-requisite Shimano I-Spec II compatible brake levers. Sold individually and can be used for either right- or left-hand side. - Hinged clamps for easy installation without removing other components - AL-6061, anodized black - 23 grams - For use only with I-Spec II compatible shifters or dropper lever

Available in the most common sizes and thicknesses-in small or bulk quantities, Problem Solvers headset spacers help riders get their stack height just right. - Made from Aluminum, anodized or polished finish, without logos - 1-1/8" Diameter - S.H.I.S. Stem Clamp Diameter: 28.6mm

I-SpecBar Clamps are a one-piece hinged clamp adapter that allows users to mount I-Spec compatible shifters or dropper levers onto the handlebar, without requiring an I-Spec brake lever. - Sold individually, the clamp can be mounted to the right or left side - Hinged clamp for easy installation without removing other components - Black Anodized, CNC AL-6061 Aluminum - Compatible only with Shimano I-Spec II compatible shifters or dropper post remotes - 23g

Problem Solvers Pog top caps are machined aluminum with a 5 or 10mm spacer integrated as one piece. This makes for a clean, finished look when mounting a stem below the top of the steerer tube. - Bolt not included - 10mm available with or without logo - 5mm available without logo only

ReMatch adapters are designed to integrate different generations of Shimano Brakes to Shimano Shifters. Rematch Adapter 1.2 connects Shimano I-Spec A/B brake to I-Spec II Shifter. - Made from CNC Machined T6061 Aluminum - Anodized Black - Includes all necessary hardware for both I-Spec A and I-Spec B brake - No additional hardware needed

MisMatch 1.2 adaptors allow users to mount a SRAM MatchMaker shifter to a Shimano I-Spec-II brake lever clamp. - Installation hardware included - Anodized black - Sold each

The Problem Solvers Micro-Adjustable Headset Spacer goes on the fork (it requires 10mm of clearance on the steerer) and locks in place to retain your headset bearing adjustment. This makes it possible to run your fork and headset without a star nut or compression plug. This 2-part threaded component is made of CNC-machined aluminum with a small bolt for tightening, so it's light and durable.

The Problem Solvers Backstop bolts onto the frame to provide two stops for your cable housing. It's made of light, durable CNC-machined aluminum with a stainless-steel bolt, and the stops are slotted for easy cable installation/removal.

Problem Solvers Universal Derailleur Hangers The Universal Hanger replaces the drive-side nut on the quick-release skewer so you can get the majority of your gear range back. A vital tool to bring along when touring. - Emergency, on-the-trail derailleur hanger replacement - Enables you to keep riding and use the majority of your gear range - Compatible with most rear-facing-horizontal and vertical dropouts - Replaces the drive-side nut on 5mm quick-release skewers - Anti-rotation feature ensures the derailleur stays in place during use - CNC-machined AL-6061 with steel hardware

The Problem Solvers Sheldon Fender Nuts are an awesome way to avoid the brake-centering problems caused by mounting fenders directly to your brakes. They're named after the inventor and bike guru, Sheldon Brown. These special Sheldon nuts take the place of your existing brake nuts. They have threaded extensions for standard 6mm bolts (sold separately) providing a secure mounting place for your fenders that won't mess with your brake adjustment. They make it easier/faster to install and remove fenders, too, so they're great for commuting bicycles.

The Problem Solvers Head Tube Reducers resize your head tube to accommodate different size forks. These fine aluminum reducers are designed for traditional, external-cup headsets. Please contact us for any questions about compatibility with your bicycle.

The Problem Solvers Chain Tensioner is a handy device that lets you cleanly install a derailleur on frames without a derailleur hanger. It's made of light and durable CNC-machined 6061 aluminum with steel hardware. It's designed for use with rear-facing horizontal dropouts and 10mm rear axles.

These handy Problem Solvers Eccentric Bottom Bracket Shims allow you to fit your existing Eccentric Bottom Bracket into BB shells with inner diameters of 55mm or 57mm. - Anodized black - 6061 Aluminum

The Problem Solvers Seatpost Shim is what you need when your seatpost is a little too small-diameter to fit tightly into your frame. It's made of light, durable aluminum and has a lip on the top so it won't slide down inside the frame during installation.

Notched binder bolts for frames with integrated seat collars. Details: CroMoly steel bolts Three lengths available: 16, 19 and 21mm 8mm diameter

The Problem Solvers Double Chainring Bolts include 5 chainring bolts and nuts that are 8mm wide. This is the right size for most double-chainring setups. These chainring bolts are made of either aluminum, stainless steel, or chromoly.

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 Braze-On Front Derailleur Adapter simply clamps onto your frame's seat tube and provides a secure place to bolt on your braze-on front derailleur (sold separately). This fine adapter is made of light, durable aluminum and includes a stainless-steel bolt.

Switching frames doesn’t mean you have to switch posts! Use your old posts without worry with Problem Solver's wide variety of seatpost shims. -100mm long -3mm lip -Alloy Problem Solvers Seatpost Shims are not intended for use with carbon seatposts

The Problem Solvers Double Chainring Bolts include 5 chainring bolts and nuts that are 8mm wide. This is the right size for most double-chainring setups. These chainring bolts are made of aluminum and feature dual-hex heads for easy, secure installation.

The Problem Solvers Direct Mount Adapter gives you a place to install direct-mount Shimano and SRAM derailleurs. It was initially developed for standard mountain bike frames with 68/73mm wide bottom bracket shells, and is equally suited to fat/snow bikes, where their 100mm wide bottom brackets make front derailleur applications a little difficult. The adapter is made of light and durable 6061 aluminum.

The Problem Solvers Center Lock Rotor Adapters are CNC-machined aluminum adapters that allow the use of 6-bolt rotors on Shimano's Center Lock hubs.

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.

Available in the most common sizes and thicknesses-in small or bulk quantities, Problem Solvers headset spacers help riders get their stack height just right. - Made from Aluminum, anodized or polished finish, without logos - S.H.I.S. Stem Clamp Diameter: 25.4mm

ReMatch adapters are designed to integrate different generations of Shimano Brakes to Shimano Shifters. Rematch Adapter 1.1 connects Shimano I-Spec A/B shifter to I-Spec II brake. - Made from CNC Machined T6061 Aluminum - Anodized Black - No additional hardware needed ReMatch 1.1 is NOT compatible with Deore M610 or SLX M670 shifters

For riders who appreciate an elegant and streamlined setup, the Stem to Top Cap Tapered Spacer features a slight taper toward the top, allowing it to transition seamlessly to the Top Cap. - Anodized aluminum construction, no logos - Sold in packs of ten - 4mm outer diameter at base tapers to 32.5mm outer diameter at the top - S.H.I.S. Stem Clamp Diameter: 28.6

Downtube cable adjusters from Problem Solvers. - Braze-on downtube adjusters for road shifters - Contoured to fit traditional sized steel downtubes - Black Finish