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Inventory may vary and items may be only available at one of our stores. Please call us to make sure the part you are looking for is available at the store you want to visit.

Belmont Wheelworks - 617.489.3577 | ACE Wheelworks - 617.776.2100

All-City Cable Clamps
$12.00
Snap-on brake cable guides for bikes that don't have any. - Steel cable housing guide for 1-1/8" top tubes - Snaps on; no bolts - Set of 3 clamps
Blackspire Defender Bash Guard
$74.99
- The only bash guards offering protection for 2x and 1x drivetrains with odd BCDs - Anodized with laser etched graphics, CNC machined 6061 T-6 aluminum construction and includes custom mounting hardware - 120BCD: XX/XO/X9/X7 2x cranks - 88BCD: XTR M985 2
Campagnolo Record EPS V2 Interface Unit
$180.00
Campagnolo's Record EPS V2 Interface Unit is like a translator, the vital piece of the electronic shifting puzzle. Mounted to the brake cable or the handlebar, it processes the data churned out by the EPS Power Unit (sold separately) and communicates it to you via an easy-to-read colored LED. Plus, it plays the critical role of converting every analog shift you send its way into a digital format so the system can work as a cohesive whole. There's also an easy-to-read LED battery gauge so you know when it's time to recharge the system. And don't mind the weather, as it's totally waterproof.
DT Swiss Centerlock To 6-Bolt Adapter
$21.00
- Adapts 35mm CenterLock rotor-mount splines to accept an International Standard 6-bolt, 44mm BCD rotor - Does not fit Saint-style 47mm Oversize CenterLock, and will not work with thicker, aluminum-carrier Hope 2005+ style Mono-series rotors - Designed for up to 210mm rotors - Tabs in adapter mate to (6) M5 rotor bolt holes and is secured by CenterLock-style lockring, sandwiching 6-bolt rotor to adapter - Lockring requires a 16-notch external bearing bottom bracket wrench - CL-IS adapter is black and lockring is black with silver etching: 29g
Delta Stem Raiser
$34.99
- Clamps to a threadless steerer, offers up to 3-1/4" stem height increase - Forged 6061 aluminum - Threaded alloy top cap
Dimension Seatpost Binder Bolt
$9.99
Dimension Seatpost Binder Bolts - 16g
Dimension Seatpost Clamp
$17.99 - $18.99
Dimension Seatpost Clamps - Diameters: 28.6mm, 30.0mm, 31.8mm, 35.0mm - Weight: 34g
Dimension Quill-To-Threadless Steerer Adapter
$24.99
Dimension Stem Column Adaptors - Total quill length 180mm - Measurement from minimum insertion to top of steerer adaptor is 118mm - Alloy - Quill insertion diameter: 1-inch
Dimension Steerer Extender
$39.99 - $44.99
Dimension Steerer Extender adds 2 to 3-1/4" height to steerer. - Extender clamps to steerer; stem clamps to extender - Adds 2 to 3-1/4-inch height to threadless steerer - Includes top cap and long bolt - 40mm of threadless steerer is required for proper installation - Do not stack steerer extenders; no more than one steerer extender recommended per bike - WARNING: Dimension Steerer Extender is not recommended for use on forks with carbon fiber steerers
FSA MegaExo Left Crank Bolt for 19mm MegaExo Cranks
$3.99
This is a MegaExo Left Crank Bolt for 19mm MegaExo Cranks. - M12 bolt
FSA MegaExo 12 Left Arm Crank Bolt
$7.99
Tight tolerances and precise torque specs mean precision parts like this MegaExo 12 Left Arm Crank Bolt need to be replaced from time to time. Make sure the heart of your drivetrain is secure, and pick up a spare or two today.
FSA ISIS M12 Crank Bolts
$9.99
ISIS cranks have been around a long time, and they're still a great design. If you've got one, keep it in top working condition with these quality crank bolts from FSA. - ISIS-compatible - M12
FSA FSA Self Extracting Left Crank Arm Bolt for Carbon Mega Exo Road Cranks
$12.99
This is an FSA MegaExo Crank Arm Fixing Bolt for MegaExo Cranks. - 26mm length - 12g - Designed to fit FSA cranks only - Includes M18 bolt, M27 self-extracting cap and washers
FSA MegaExo Self-Extracting Crank Arm Bolt for 24mm Alloy Cranks
$12.99
This is an FSA MegaExo Crank Arm Bolt for 24mm MegaExo alloy cranks - Designed to fit alloy FSA cranks only - Includes M17 bolt, M27 self-extracting cap, and washers
FSA Headset Compression Plug
$14.99
Keep that front end tight and responsive, while preserving the integrity of the carbon steerer on your high-end fork with FSA's Headset Compression Plug. - Alloy top cap - For carbon steer tubes
FSA Self Extracting Crank Bolt for Hollow Carbon MegaExo Light Cranks
$14.99
This is an FSA Self Extracting Crank Bolt for Hollow Carbon MegaExo Light Cranks - Designed to fit hollow carbon FSA cranks only - Includes M17 bolt, M27 self-extracting cap, and washers
Fox Racing Shox Transfer Lever Assembly 2x/3x Remote
$65.00
Left/right on bar lever (for 2x/3x).
Greenfield RetroKit
$3.99
The Greenfield RetroKit is a retro-mounting kickstand plate designed with a cutaway to clear derailleur cables. - Fits all Greenfield kickstands and most generics - Made in the USA
Greenfield Kickstand
$17.99
This is the kickstand you need for your new bike! Greenfield's Kickstand attaches quickly and easily to most bicycles and provides a safe and convenient way to park your bikes at home and on the road and trail. It's also durable, lightweight, and looks great on any bike. Plus, it's made of a special non-corrosive aluminum and is built to last. You'll want one on all your bikes!
Hayes Master Cylinder Body/Lever Parts
$17.62
- MC bodies are bare (no guts, reservoir, lever, etc.) - Stroker Series bodies come with bar clamp and bolts
Jagwire Pro Mini Indexed Inline Adjusters
$16.99
Inline adjusters make on-the-fly derailleur cable tension adjustments safe and easy. - Indexed shifter adjustment, fits 4.0mm housing; not recommended for use with brake systems - Compact design improves performance when used on curved housing segments
K-Edge Road Braze-on Chain Catcher
$23.99
The K-EDGE Road Chain Catcher is THE Original Chain Catcher used by professional cyclists and pro teams around the world, in all types of racing including prestigious Olympic Games, World Championships, and Grand Tours, such as the Tour de France, Paris-Roubaix, and Giro d ’Italia. The K-EDGE chain catcher is a simple add-on component machined to precision which improves the overall function of your drive train and protects your valuable frame from dropped chains. - Material: 6061-T6 CNC machined Aluminum - Fitment: All braze-on mounted front derailleurs* - Hardware: Includes all mounting hardware for Shimano, SRAM, and Campagnolo front derailleurs * Not compatible with Campy EPS * May not work with all third party braze-on adapter clamps - Made in Boise, Idaho, USA, - Lifetime Guarantee against material or manufacture defects. Damages due to abuse or crashing excluded.
KMC Half Link Adapter
$2.99
- Half-link connector allows you to add or subtract half of one link (1/2 inch) from the chain in order to optimize chain tension - Uses standard chain pin connector and tool
KMC MissingLink Connector
$18.00
- 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|~|
KS Southpaw Remote
$35.00
- Underbar dropper remote, ideal for bikes with 1x drivetrain - Split clamp allows 4-axis of adjustment for perfect setup - Upgrades all remote Kind Shocks (not intended for lever adjustable models and not compatible with first generation LEV Integra)
Odyssey Gyro G3 Lower Cables
$7.99 - $8.99
- Lower cables for Odyssey's Gyro G3 (sold separately). - Universal fit. - Lower cables only.
Odyssey Gyro G3 Upper Cables
$9.99
- Upper cables for Odyssey's Gyro G3 (sold separately) - Universal fit. - Upper cables only.
OneUp Components Dropper Post Remote V2
$64.99
An Aluminum remote with an oversized bearing and a super smooth action. The unique lever position allows you to keep a stronger grip on the bars while actuating your post. Don't think twice about dropping your post, even when charging into technical sections. The OneUp lever mimics your R/H shifter’s inboard upshift paddle position instead of the usual downshift paddle position of most remotes. This position requires considerably less thumb movement to reach the lever. NO BLEEDING The cable setup is quick and easy. The cable clamps at the lever making shortening the housing length for clean routing a breeze. Unlike a hydraulically actuated dropper, there is no temperature sensitivity and If your remote gets damaged you can still lower or extend your post by removing it from your frame and pushing on the actuator by hand. Kit includes cable and housing Compatible with all cable actuated dropper posts. SPECS Compatibility +22.2mm Bar Clamp - All other groups 10 speed Shimano +SRAM Matchmaker X - SRAM MMX clamps Weight: +Remote with 22.2mm Bar Clamp - 46g +Remote with SRAM Matchmaker X - 43g
Origin8 Quill Adapter
$19.99
Origin-8's Quill Adapter allows you to use modern threadless stems on bicycles with threaded forks that take quill stems (stems with bolts in the center). The Quill Adapter is made of light and durable 7075 aluminum and features a chromoly bolt.
Origin8 Single-Speed Conversion Spacer Kit
$25.15
- Converts a cassette hub to a single speed - 8 spacers included in various sizes to adjust chain line - Available in black or red anodized 6061 aluminum - Fits Shimano style cassette bodies - Conical spacers for increased cog stiffness
Origin8 Single-Speed Conversion Kit
$59.99
• Converts a cassette hub to a single speed • 8 spacers included in various sizes to adjust chain line • Anodized 6061 aluminum • Fits Shimano/SRAM cassette bodies • Conical spacers for increased cog stiffness • Includes single-speed guide, spacers, as well as 18T & 16T cogs
PNW Components Loam Lever Dropper Post Lever Kit
$69.99
Dropper post levers are something a lot of us overlook—we want our dropper to work but don't think about the button that makes the magic happen. After testing a bunch of levers, from the plastic ones to the ergonomically weird, even the best in class, we decided we could do better. So we made the Loam Lever. It's the most adjustable lever around, ensuring you can modify it to fit your exact ergonomic specifications. The lever's grippy, injection-molded pad has got your back in sloppy weather conditions. And, speaking of weather, we made sure the whole thing was as weatherproof as possible, meaning your lever won't squeak, bind up, or fail after being in the rain. The Loam Lever Has 5 Key Characteristics: 1. Adjustability - We believe precision matters, this lever provides two forms of adjustment so you can dial-in your perfect placement.  2. Weather Proof - Oversized high-quality sealed bearing paired with an additional seal and all stainless hardware for longevity and durability. 3. No-Slip Grip - Speaking of weather, the Loam Lever features a grippy, injection-molded thumb pad so you can drop or raise at the right time in even the sloppiest of conditions. 4. Techy AF - Custom CNC machining throughout the whole design of the Loam Lever for precision and weight reduction. 5. Direct Mount - Available in SRAM's MatchMaker X for Guide brakes and Shimano's I-Spec II for XTR M9000, XT M8000, SLX M7000, and DEORE M6046
Problem Solvers Brake Boss Plugs
$4.99
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.
Problem Solvers Cassette Spacer
$4.99 - $7.99
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.
Problem Solvers Steerer Tube Shim
$6.99
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.
Problem Solvers 11-Speed Freehub Spacer for 10-speed cassette
$7.99
Problem Solvers' 11-speed Freehub Spacer converts your 11-speed freehub body to accept a 10-speed casssette. Use this spacer if you are running a 10-speed drivetrain on a new set of wheels with a 11-speed freehub body. The spacer is 1.85mmm thick.
Problem Solvers Clamp-On Water Bottle Cage Mount
$8.99
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.
Problem Solvers Brake Mounting Nut
$9.99
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.
Problem Solvers Handlebar Clamp Shim
$9.99 - $10.00
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.
Problem Solvers Hydraulic Brake Hose Guides
$9.99 - $11.99
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.
Problem Solvers Seat Binder Bolts
$9.99
Notched binder bolts for frames with integrated seat collars. Details: CroMoly steel bolts Three lengths available: 16, 19 and 21mm 8mm diameter
Problem Solvers Seatpost Shims
$9.99 - $11.99
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
Problem Solvers Standard Top Cap
$10.99
The Problem Solvers Standard Top Cap is a light, durable aluminum top cap for threadless headsets. These caps fit all forks.
Problem Solvers Seatpost Clamp with Rack Mounts
$11.99 - $16.99
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.
Problem Solvers Seatpost Shim
$11.99
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.
Problem Solvers Double Chainring Bolts - 8mm
$14.99
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.
Problem Solvers Single Chainring Bolts - 6mm
$14.99 - $19.99
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 Self-Extracting Crank Bolts
$15.99
The Problem Solvers Self-Extracting Crank Bolts take the place of the existing bolts in Shimano/Octalink, Race Face ISIS, and M15-compatible cranksets to let you remove your crankarms with only an 8mm Allen wrench instead of special tools. A 10mm Allen wrench (sold separately) is used to install these fine aluminum self-extractors.
Problem Solvers Sheldon Fender Nuts
$16.00
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.
Problem Solvers Inner Chainring Bolts - 12.5mm
$16.55
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 12.5mm long and made of durable chromoly.
Problem Solvers Compression Plug for 1 1/8-inch Forks
$17.99
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.
Problem Solvers Backstop
$19.99 - $23.99
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 Braze-On Front Derailleur Adapter
$19.99
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.
Problem Solvers Quick-Release Nut Light Mount
$19.99
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.
Problem Solvers Micro-Adjustable Headset Spacer
$24.99
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.
Problem Solvers Travel Agent
$27.99
The Problem Solvers Travel Agent amplifies your braking power so that you can mix road, mountain and cyclocross brakes and brake levers. Instead of buying new levers or brakes, just install a Travel Agent and you're good to go. This trick gizmo is made of quality 6061 aluminum and is available with and without a built-in adjustment barrel. It works with cantilever brakes, road dropped handlebars, and Shimano STI and Campagnolo Ergopower levers.
Problem Solvers Head Tube Reducers
$29.99 - $44.99
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 Deckster Clipless Pedal Adapter
$39.99
Problem Solvers Deckster pedal adapters. Converts SPD-compatible pedals to platform pedals for casual cruising. • Works with 2-bolt, SPD-style cleats, such as Time, Shimano, Crank Brothers, Wellgo and others. Not compatible with Speedplay • Cleats not included • 85 x 95 x 10mm platform • Hardware included, cleats not included
Problem Solvers I-Spec II Shifter Clamp
$39.99
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
Problem Solvers BB30/Press-Fit 30 Adapter Kit
$55.55
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.
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