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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

Replace old brake barrel adjusters with a fresh pair of Problem Solvers' 10mm Brake Barrel Adjuster. Designed for use with standard brake cables.

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.

The Problem Solvers Brake Boss Plugs are perfect for when you've removed your cantilever or linear-pull brakes in order to run disc brakes or a fixie setup. These plugs thread into the empty frame bosses and lend a clean look, while also protecting the threads inside the frame from corrosion.

The Problem Solvers Brake Mounting Nut is for front caliper brakes that take recessed fixing nuts. This chrome-plated steel Allen nut comes in 2 long lengths so that it will grip enough threads to tightly fasten the brake on even the thickest of fork crowns.

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.

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 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 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.

• Allows the use of downtube shifters on bikes without downtube shifter braze-ons • Compatible with 9/10-speed Shimano shifters • 31.8mm clamp with shims for 28.6mm tubes • Shifters not included

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 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 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 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.

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 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.

Problem Solvers has a couple different options for adding cable housing or brake hose guides to your bike. Choose from the adhesive stick-on option or the guide that mounts to existing housing stops.

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

MisMatch adapters allow users to mount Shimano & SRAM brakes and shifters on one clamp. MisMatch Adapter 1.0/1.1 attaches SRAM shifters to Shimano I-Spec-A or I-Spec-B brake lever clamps. MisMatch adapters and the ever evolving “standards” it attempts to integrate between SRAM and Shimano is a confusing subject. Shimano brake and shifter mounting options have changed a lot, going through four mounting systems from 2011-2016. Shimano components have a model number printed somewhere on the brake and/or shifter, and this is the best way to determine what you own and what adapter you need. MisMatch 1.0/1.1 fits Shimano brake levers:BL-M985, BL-M988, BL-M820, BL-M785, BL-T785, BL-M675, BL-T675, BL-M640, BL-M596, BL-M820-B, BL-M785-B, BL-M675-B, BL-M640-B, BL-M615, BL-M506 - Annodized Black

Problem Solvers' MisMatch Adapters allow you to combine your Shimano and SRAM shifters and brakes onto a single clamp for a more ergonomic, less-cluttered handlebar. These CNC-machined aluminum adapters work with Shimano I-Spec and SRAM MatchMaker components to fasten your preferred combination on to a single, existing bar clamp.

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 Seatpost Clamp with Rack Mounts is an ingenious adapter that gives you a super-secure and clean way to mount a rear rack on your bicycle. This light and durable aluminum piece simply takes the place of your seat tube collar. It includes a stainless-steel binder bolt and 2 5mm screws for rack attachment.

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.

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 Single Chainring Bolts include 5 chainring bolts and nuts that are 6mm wide. This is the right size for most single-chainring setups. These chainring bolts are made of either aluminum, stainless steel, or chromoly.

Problem Solvers' Cassette Cog Carrier (CCC) bolts on to a splineless single-speed cog to give you a wide, Shimano-splined cog to run on your freehub body. The wide profile won't damage your freehub body. Tech Details: Aluminum carrier with steel cogs

The Problem Solvers Standard Top Cap is a light, durable aluminum top cap for threadless headsets. These caps fit all forks.

The Problem Solvers Steerer Tube Shims are for installing 1-1/8-inch diameter threadless stems on 1-inch diameter threadless forks. The shim is made of light, durable anodized aluminum and is chamfered on the ends for easy stem installation.

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.