The EPS Power Unit is the systems source of power as well as the "brain" of the system, responsible for managing the battery pack, enabling and monitoring the front and rear derailleurs and communicating with the Interface Unit. - Weathertight, o-ring sealed connectors - Lithium Ion battery duration: 500km/month - 1500km, 1000km/month - 1800km, 2000km/month - 2000km - Water proof to 1m for 30 minutes (IP67 Rated) - Operational temperature: -4F to 140F - Charging temperature: 32F to 113F - 17mm diameter for easy seat post installation - Battery charges through the Interface Unit - Compatible only with the Super Record/Record V3 Power Unit

In conjunction with the EPS Power Unit, the Interface is the "thinking" center of EPS and is responsible for on board diagnostics, managing settings, converting analog signal from Ergo Levers to digital and sending it on to the Power Unit maintaining a dialogue with the Power Unit. - New shape with LED indicators on 3 sides - Battery charges through the Interface Unit, no more need to drill a charging port hole in the bicycle frame - Contains a wireless module allowing for connection to PCs, smartphones, tablets, etc., through ANT+ and Bluetooth Low Energy (BLE). Requires the use of Android 4.3 or newer, or iOS 8 or newer - Only compatible with Campagnolo Super Record and Record V3 Power Unit - Waterproof to 1m for 30 minutes (IP67 Rated) - Weathertight, o-ring sealed connectors - See PDF for complete details on the V3 app and customization

Campagnolo's EPS Interface Unit is like a translator, the vital but often overlooked 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.

Campagnolo's Record EPS V2 Power Unit is the reliable brain of Campy's electronic shifting. In order to keep your bike looking sleek, the mounting options allow it to sit inside your bike's frame. The 3-cell, 12-volt Lithium-ion battery delivers up to 1,200 miles on a single charge. It also houses the electronics necessary to deliver pinpoint shifting precision to the front and rear derailleur mechanisms (sold separately). For example, if you're cross-chained, the system immediately senses it and moves the front derailleur ever so slightly to avoid chain rub. Plus, the one-piece, ultrasonically-sealed unit is impervious to water or road vibration.

Shimano Di2 External Battery Mount - All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions - Use Di2 system checker to update component firmware

Surly Mr. Whirly Spindles. - 100% CroMoly steel - Proprietary dimensions and spline for use only with Surly Mr. Whirly cranks

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

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' 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.

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.

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x8 Flat Head Screws Note: Included hanger hardware is 1mm too long, it is suggested that existing hanger hardware be used!

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

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

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

This is the correct plug-and-play wire for Shimano's E-Tube Di2 electric-shifting systems. It comes in sixteen different lengths, so choose the one(s) that's right for your Di2 E-Tube wiring configuration.

Enduro 6806 ABEC-3 Sealed Bearing. Direct replacement bearing for most BB30/PF30 OEM bottom brackets as well as all Wheels Mfg bottom brackets for 30mm spindle cranks. - Dimensions: OD: 42mm / ID: 30mm / Width: 7mm - ABEC-3 - Grade 10, 5/32" chromium steel balls - Kyodo Yushi SRL grease or equivalent - Enduro Part # BB 6806 LLB/C3 - Imported - Sold Bag of 2

This Wheels Manufacturing Shimano/SRAM Single Speed Conversion Kit includes chain guides for carefree single speeding. Large chain guides sandwich the cog with diameters slightly larger than the cog to keep the chain from hopping off the rear cog. Includes: - (2) - 9mm chain guides - (6) - 3mm spacers - (2) - 1mm shims - (4) - 0.3mm shims - (1) - lockring - (1) - 16t cog Compatible with: - Any ½ x 1/8 pitch chain, this includes BMX and Track chains - Any 8 or 9-speed chain Note: Does not work acceptably with any 10 or 11-speed chain

Clamp allows use of a braze-on derailleur on frames without the braze-on tab. Includes a tab to use SRAM's lightweight and easy-to-adjust chain control device. - Fits all SRAM road braze-on front derailleurs - ChainSpotter not included

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x8 Flat Head Screws Note: The mounting holes on Wheels Mfg DROPOUT-120 are 18mm apart, center-to-center. Do not confuse this hanger with DROPOUT-138.

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x8 Flat Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x8 Flat Head Screws Note: The mounting holes on Wheels Mfg DROPOUT-138 are 23mm apart, center-to-center. Do not confuse this hanger with Wheels Mfg DROPOUT-120.

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M3x10 Socket Head Cap Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - For carbon frames, use (2) M3x8 Flat head screws - For all non-carbon frames, use (2) M3x10 Flat head screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (1) M5x10 Socket Head Screw

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x10 Flat Head Screws

All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Includes (2) M4x8 Flat Head Screws

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

Replacement derailleur hanger for Specialized Diverge, CruX and Roubaix Carbon with Specialized SCS 135x12 thru-axle system. All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - (1) M5x10 Socket head screw included

EPS Power Unit Mounts are required for mounting the Power Unit to the bicycle and are available in both seatpost mount and waterbottle mount. - For mounting the V3 power inside the seat tube using the water bottle screws - Not compatible with the V2 Power Unit

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