Skip to main content

FREE Shipping Now Available on Orders $50+ (excluding oversized items)

Why shop at Mad Dog Cycles? Learn more about our promise here!

Filter By:

  • Show More Brands

  • Show Fewer Brands
  • Show More Sizes
  • Show Fewer Sizes
  • Show More Model Years
  • Show Fewer Model Years

Electronics

$13.99
Wire harness and hardware to measure computer data based on the front wheel. - Fits most bars bars (25.0 to 31.8mm), 86cm wire, wheel magnet (fits up to 4mm bladed spokes) and zip ties - Compatible with: Protege 5.0, 8.0 and 9.0
$59.99
Superlight, machined aluminum, race mount for the ultimate Tour de France level performance. At 32 Grams the Race Mount is 33% lighter than the “standard” Garmin Mount. - CNC Machined 6061-T6 Aluminum Platform, Injection Molded Copolymer Interface - Compatibility: Garmin 820, 520, 510, 500, 25, 20 - Fits Handlebars: 31.8MM - NOT GoPro Compatible - Anodized Color: Black, Red, Blue, Red/Blue - Made in Boise, Idaho, USA - Lifetime Guarantee against material or manufacturer defects. Damages due to abuse or crashing excluded. * Attention: ASSEMBLY BOLTS NOT MEANT TO BE REMOVED OR TAMPERED WITH AT ANY TIME. The torx head bolts are installed using a permanent thread-lock compound. Doing so will void all warranties. Please contact K-EDGE warranty manager Info@K-EDGE.com for questions or concerns. We highly suggest you follow the recommendations in the Sigma instructions that recommend use of the provided tether leash.
$16.99
Mounting for Shimano Di2
$69.99
The Sigma BC 14.0 WR's altitude measurement function makes the device the flagship of the SIGMA ORIGINALS computers. It saves your statistics for the last twelve months – for up to two bikes as well (optional). This bike computer is a a true all-rounder and a great option for riders who love hills! - Hill riders get their money’s worth: The BC 14.0 WR is a perfect companion – especially on steep hills. This computer displays current altitude and incline. After a ride, the wired bike computer gives you an overview of the meters you climbed on that day’s ride and the maximum altitude you reached. It also saves the total altitude you have climbed on all your rides. - The speedometer’s direct cable connection with the transmitter ensures smooth speed measurement. The BC 14.0 WR needs no battery for wired transmission, and you can use your bike computer for years without changing its battery. - If you regularly ride different bikes, it’s easy to use the BC 14.0 WR on your second bike. After setting it up once, you can select the bike you are currently using on your bike computer. - You can set up the BC 14.0 WR easily thanks to the pre-defined tire sizes, which range from a small child’s bike to a 29? bike. You can also enter the tire circumference exactly to the millimeter. - Tour Statistics: It displays your personal statistics for the last twelve months – total distance, ride time, and altitude - The large backlit display is easy to read, even when it's dark - Intuitive Operation: You can use the two lower buttons to conveniently toggle among the individual functions. The menu button takes you to the settings and the monthly statistics. Its integrated start/stop function begins measurement as soon as you start your tour and stops when you take a break or finish your tour. - You can attach the BC 14.0 WR’s bracket to the handlebars or stem with two cable ties. The speed transmitter can be mounted the same way. The computer receives all the necessary data through the cable. You can remove the bike computer at any time and stow it conveniently – and just as quickly get it ready for your next hill adventure!
$69.95
Works with iPhone SE(2nd Gen) / 8 / 7 The RideCase for iPhone has a scratch-resistant, dual density, non-slip, high-grade engineering polymer/rubber exoskeleton for shock and impact protection that securely holds your phone while on the go. Its unique and full-angle adjustable mount allows viewing in landscape or portrait orientation and lets you mount or remove the RideCase in seconds. An integrated flip stand allows for easy viewing off your bike and is compatible with wireless charging. - Material: Engineering grade polymer / Rubber / Machined aluminum - Mount: Included mounts for installation on handlebar, stem, or stem cap - Size: 14.4 x 7.3 x 1.4cm / 5.7" x 2.9" x 0.55" - Weight: 41.6g / 1.47oz - Added Features: Integrated flipstand for landscape or portrait viewing - Compatibility: Works with iPhone SE 2nd gen/8/7/6/6s
$59.95 - $69.95
The RideCase for iPhone has a scratch-resistant, dual-density, non-slip, high-grade engineering polymer/rubber exoskeleton for shock and impact protection that securely holds your phone while on the go. Its unique and full-angle adjustable mount allows viewing in landscape or portrait orientation and lets you mount or remove the RideCase in seconds. An integrated flip stand allows for easy viewing off your bike and is compatible with wireless charging. - Material: Engineering grade polymer / Rubber / Machined aluminum - Includes mounts for installation on handlebar, stem, or stem cap - Size: 15.7 x 8.2 x 1.5cm / 6.2" x 3.2" x 0.59" - Weight: 35g / 1.23oz - Added Features: Integrated flipstand for landscape or portrait viewing angle adjustable rotates for landscape or portrait viewing
$7.49
The Under Stem Mount allows riders to secure a Shimano Di2 Junction Box to their bike quickly and easily without the need for zip ties, duct tape, or other unreliable attachments. - Lightweight alloy headset spacer with nylon body (9g) - Compatible only with Shimano Di2 Junction Box - 95mm length, 44mm width, 6mm height - 6 Degree angle
$59.95
Wireless, weather-proof and easy to read, the sleekly designed Quick bike computer with integrated out-front bracket measures your speed and distance giving you the edge on your daily commute and beyond. - Sleek design with integrated out-front bracket (head unit is removable from the bracket) - Analog wireless - Easy to read inverted LCD - Auto start/stop - Menu screen to change setting - Programmable odometer - Battery indicator
$59.99
The Wahoo BlueSC speed and cadence sensor transforms your phone into a powerful cycling computer. Using Bluetooth Smart and ANT+ technology, it tracks cycling speed, cadence, and distance which can be paired with your favorite cycling app including Strava and Zwift, or paired to your bike computer. It's weatherproof, small with a low drag profile, and comes with a rubber band and zip tie mounts. - Both ANT+ and Bluetooth Smart capabilities allow for a wireless connection to both smartphones and GPS devices. - No tangled wires on your bike to connect the sensor to your device. - Provides accurate speed data during your ride - Provides accurate cadence data during your ride - BlueSC comes with a rubber band mount and zip tie mount. - The Blue SC sensor will fit with most bikes and frame sizes
$22.99 $49.99 54% Off
Connect your PC to CycleOps VirtualTraining.
$34.99
Lezyne's Smart Energy Caddy is a lightweight, semi-rigid, top-tube-mounted smart phone caddy made from molded EVA foam with a durable woven nylon cover. Its clamshell pod design opens to provide easy access, and a mesh divider helps keep items in place. The Smart Energy Caddy's smart phone pocket holds any popular 4-5" phone model, and features a clear touch screen-compatible panel for full control of your phone. Three Velcro straps attach your caddy to your bike's top tube.
$25.46 - $39.99 $29.95 - $39.99 Up to 15% Off
About this item: Compatible with all Quad Lock Mounts – Cycle, Motorcycle, Car, Run, Golf, Home & Office. Also compatible with Quad Lock MAG Head and Quad Lock MAG Wireless Charging Head, you can upgrade your Car, Desk, or suitable mount for fast and easy magnetic mounting. Flatter and thinner than our Original Quad Lock Case, with the option to customise the MAG ring with one of 6 different colours. MAG Case has black MAG ring pre-installed. Sleek everyday case, impact resistant TPU material with sleek, black matte finish. Complete edge-to-edge protection for your iPhone Full access to all ports, buttons & switches
$366.50
Versatile and clever The Nyon is the perfect companion for embarking on your fully connected eBike experience. Nyon connects to your smartphone with the eBike Connect app and exchanges data about routes and activities. The color display serves as an intelligent guide when you are exploring new places and as your personal trainer by providing you with fitness data. The touch screen makes the all-in-one computer both intuitive and easy to use and is operated using the separate control unit during your ride. Whether you're using your eBike for long rides or short everyday trips, the robust, easy-to-read display ensures that you are ready for all requirements and weather conditions. The Nyon computer – for a smarter, more intuitive and connected generation. This is what Connected Biking feels like. Simple operation A convenient option: Nyon is intuitive to use thanks to the touch screen function and can be operated using the separate control unit during your ride. Award-winning design Impressive both inside and out: The 3.2-inch high-resolution color display combines smart functions with an elegant design that has won a Red Dot Design Award. Easy to read A clear view in any light: The display brightness and backlight automatically adapt to the ambient light. A special coating reduces glare and finger marks. You can choose between a dark and a bright display with maximum contrast. Individual screens Focus on the essential: You can customize the user interface of the display to suit your specific requirements. This gives you a clear view of the information that you need at all times. Always ready for action Whatever the weather: The touch screen of the robust display remains fully functional even when exposed to rain or dust and can be operated while wearing bike gloves. Savings Screen If you want to find out how much you could save by choosing to use your eBike instead of a car, check out the info on the new Savings Screen. This is activated in the screen management settings. You can also see a comparison of the current and previous weeks, or choose a different currency in the settings. Smart connectivity functions Perfectly connected: Nyon is part of an intelligently connected system and opens the door to the connected eBike World of Bosch thanks to the eBike Connect smartphone app and an online portal. Data synchronization Constant communication: As soon as Nyon connects to your smartphone or Wi-Fi, the computer connects to your eBike Connect account and automatically synchronizes the riding data. Choose your ideal position Optimum position: To ensure the best possible readability, the display mount has two installation positions. The center mounting position above the handlebar is designed to meet the needs of eMTB riders, while tour riders can place the mount further forward. One device, several users One for all: You can share your Nyon with friends or family – everyone can then synchronize their riding data with their own account. Software updates Always up-to-date: Software updates or new maps can be conveniently downloaded and installed over the air.
$188.00
The SmartphoneHub transforms your bike into a fully networked eBike. The smartphone and COBI.Bike app turn the SmartphoneHub into an intelligent control center that can be used for navigation, recording activities, and connection to other. The eBike can also be ridden without a smartphone due to the integrated display in the SmartphoneHub, showing the most important riding data. - The SmartphoneHub and the COBI.Bike app connect the eBike to the digital world and allow for navigation, music streaming, fitness tracking, and integration of other services and apps such as Strava - A 1.52-inch display allowing for use without a smartphone - The COBI.Bike app gives eBikers a permanent overview of the most important training data. such as performance, cadence and calorie consumption - The COBI.Bike app allows access to music and audiobook streaming services, such as Spotify or Audible, which can be operated by remote control - The SmartphoneHub charges phones using the eBike battery - Walk assistance function helps you push your eBike at speeds of up to 6 mph
$5.36 $5.95 10% Off
The H-34 Flex-Tight Bracket is an OEM handlebar bracket so you can attach Cateye accessories. It fits all handlebars up to 32mm in diameter.
$114.50
The Bosch Purion is a minimalist on-board computer designed for anyone who wishes to focus on the most important information and prefers an uncluttered handlebar. The Purion displays the essentials and lets riders get all important information with a click of the thumb, while keeping hands on the handlebars. Five different riding modes provide just the right amount of assistance in every situation. - Manages four levels of assist from Eco to Turbo, with an eMTB mode specially designed for the Performance Line CX Drive system - Features include charging status, speed, riding mode, range, trip distance and total distance
$5.50
The adapter puck is required for mounting Wahoo head units to the Pro Blendr Alloy Computer Mount. - Start with a Blendr stem, add the appropriate base, and finish with Pro Blendr Alloy Computer Mount and Wahoo Adapter Puck for secure mounting of your Wahoo head unit. Blendr is an elegant, integrated accessory mounting solution - For use with Wahoo head units and Pro Blendr Alloy Computer Mount - Removable design alloys quick and easy adapter puck replacement
$3.99
5 Pack Computer Battery Model: Bontrager/Trek Computers 5 Pack Color : Silver
$19.98
Blendr is the ultimate integration system for clean and easy installation of lights, computers, and other accessories. Start with a Blendr stem, add the appropriate base, and finish with the Blendr Trip Computer Mount for a clean, flush look that securely holds your Bontrager Trip computer in a perfect position to see on the go. Key features: - Blendr is an elegant, integrated accessory mounting solution - Provides clean and secure mount for Bontrager Insta-Mount or Trip Computer - Works with any Blendr-compatible stem and the accompanying base - For use with Blendr bases (Pro, XXX, XXX bar/stem, and select Elite bases)
$449.99
Introduce the rider you are today to the one you’ll be tomorrow. The Edge® 840 touchscreen cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Get superior accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any environment matched with a responsive touchscreen so you can tap, pan and swipe on the fly. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.
$7.99
Getting the correctly sized magnets means you're worrying about where the next coffee stop is, not if your computer is recording the ride. Key features: - Universal crank magnets work with any cadence sensor - Get the perfectly sized magnet, sized right for your bike and sensor - 20mm cadence magnet improves signal for wider gaps between crank and sensor
$69.99
All you need for cycling data, all together at once! The Wahoo RPM Speed and Cadence sensors are both a sleek, wireless, and magnet-less solution. Each mounts easily to your bike and the Bluetooth Smart and ANT+ duel band technology allows you to connect and display data on both smartphone and bike computers. - Dimensions (LxWxH): 1.25" x.75" x 1" - Weight: 7 grams (without mount) - Battery: CR2032 - Battery Life: Up to 12 months - Water Rating: IPX7 (waterproof up to 5 ft) - Wireless Signal Strength: Up to 10 feet - Note: Speed Sensor is NOT compatible with spin bikes
- CNC Machined Aluminum - Combo Compatible (K13-580 adapter sold separately) - GARMIN approved replaceable computer insert protects computer tabs - Anodized Black with laser etched logos - Payload Capacity: Top 123g / Bottom 242g with combo adapter - Weight- 50g Compatibility: - All Garmin Cycling Computers - Combo (GoPro-style light/camera interface) adapter compatible (K13-580-BLK sold separately)
$11.99
Hand tight adjustability and 4mm hex wrench lockable. - CNC Machined 6061-T6 Aluminum Platform, Injection Molded Copolymer Interface - Compatibility: Combo Mounts, Light&Camera Mounts. - Aluminum knurled thumbscrew - Stainless Steel bolt with 4MM hex feature - Weight: 10g - Anodized Color: Black - Made in Boise, Idaho, USA - Lifetime Guarantee against material or manufacturer defects. Damages due to abuse or crashing excluded
$249.95
The Ultimate Sports Communicator. Experience the Outdoors Like Never Before. WIRELESS HANDS-FREE INTERCOM Communicate with your friends and family wherever you are, without touching a button. Our always-on intercom needs no cellular or internet signal. SOUND BY JBL Powerful 40mm high-definition speakers engineered to perfection by JBL experts offer the perfect sound experience. IP67 WATERPROOF No matter what you throw at it, your waterproof Packtalk Outdoor will take the beating and keep you connected. Rain, snow, sun, mud or dust. A COMMUNICATOR FOR EVERY SEASON Use your Packtalk all year-round, zooming down a snowy slope, navigating a downhill dirt track, paddling through a raging river or jumping out of a plane. DYNAMIC MESH COMMUNICATION Dynamic Mesh Communication (DMC™) is a networking technology that creates living connections, actively seeking to connect to other units. DMC will adapt based on the behavior of units in a network to ensure communication is maintained in the best way possible. - No cellular signal or Wi-Fi is required - More users mean a larger range for the whole group - Each user can send and receive signals to overcome obstacles - Up to 1km/0.6mi range between two users – up to 3km/5mi for the whole group SPECS General PN: SP000001 Compatibility: Universal Operating Temperature -30°C to 55°C / -22° F to 131 ° F Waterproof IP67 Software Updates Over-the-air updates – USB cable updates Device settings Cardo Connect App Dimensions Main unit Height: 44mm – Length: 88mm Depth: 25mm – Weight: 49.5g Speakers Diameter: 40mm – Depth: 10mm Connectivity Bluetooth 5.2 Intercom 2nd gen DMC Intercom Group size: up to 15 users User to User Range: up to 1.0km / 0.6mi Overall range: up to 5k/3mi User interface Natural Voice Operation Multilingual status announcements Audio Sound by JBL 40mm speakers JBL Audio profiles Battery Talk time: 10 hours Charging Time: up to 3 hours Fast charging: 2 hours talk time after 20 min charge Standby Time: 10 days Certificates CE IC/FCC SRRC UKCA
$19.99
Silicone Case for Edge 540/840
$326.00
The X0 Eagle T-Type AXS™ Wide left crankarm with Power Meter spindle provides riders with accurate, live power data delivery housed in our most advanced aluminum crankset. The power meter technology is integrated through what SRAM calls “DUB-PWR” – a unique design that elegantly houses Quarq’s reliable and accurate power measurement inside the DUB crank spindle itself. Measuring left-side power to calculate total watts, it’s subtle, lightweight, compatible with any chainring setup, and boasts unbeatable battery life. It is also compatible with the Flight Attendant system, allowing for total connectivity between all AXS™ enabled components. No-compromise, no-fuss data delivery with robustness in mind. - Innovative "DUB-PWR" design allows for lightweight, subtle Quarq power integration - Compatible with RockShox Flight Attendant - Unique, groundbreaking design integrated with one of the lightest aluminum cranksets on the market - +/-3% accuracy means you'll always know your true watts output - Long battery life provides 400+ hours of usage - Waterproof (IPX7 waterproof to 1 meter for 30 minutes - Right arm, Bottom bracket, Chainring and Spider NOT included
$349.99
Introduce the rider you are today to the one you’ll be tomorrow. The Edge® 540 cycling computer offers targeted adaptive coaching when used with your compatible power meter and heart rate monitor. It helps you manage your efforts by providing power targets throughout a course plus stamina insights, so you know how much gas is left in the tank. Get superior positional accuracy under dense tree cover or the urban canyon, thanks to multi-band GNSS technology. It features button controls that work in any conditions. Whether you’re riding roads, trails, gravel or indoor, you can benefit from insights and workouts that will help you understand your strengths and weaknesses and prepare for upcoming races or personal milestones.
$149.99
DESIGNED TO FIT, BUILT TO PERFORM Purpose-built for women, HRM-Fit is the heart rate monitor you need to capture the important metrics — all with a comfortable clip-on design. - CLIPS DIRECTLY ONTO MEDIUM- AND HIGH-SUPPORT SPORTS BRAS - UP TO 1 YEAR OF BATTERY LIFE - TRANSMITS REAL-TIME HEART RATE DATA TO YOUR COMPATIBLE DEVICES AND APPS - VERSATILE ENOUGH FOR RUNNING, CYCLING, HIIT, STRENGTH TRAINING AND MORE - CAPTURES RUNNING DYNAMICS TO IMPROVE YOUR FORM WITH YOUR COMPATIBLE GARMIN SMARTWATCH - NOT WEARING YOUR WATCH? HRM-FIT CAPTURES STEPS, CALORIES BURNED, INTENSITY MINUTES AND MORE WHAT YOU'LL LOVE MADE FOR WOMEN The clip-on design easily and comfortably attaches to medium- and high-support sports bras. So move freely and sweat it out — HRM-Fit is with you all the way. CONNECTIVITY The HRM-Fit heart rate monitor transmits accurate real-time heart rate and performance data to your compatible Garmin smartwatches and Edge® cycling computers, compatible fitness equipment, the Tacx Training™ app and other apps. RUNNING DYNAMICS When paired to your compatible Garmin smartwatch1, HRM-Fit captures running dynamics — such as vertical oscillation, ground contact time balance, stride length, vertical ratio and more — to help improve your form. TRAINING VERSATILITY Move how you choose. This monitor provides accurate heart rate data for various activities, including running, indoor and outdoor cycling, strength training, HIIT, fitness classes and more. INDOOR RUNNING For your indoor track or treadmill sessions, this heart rate monitor transmits pace and distance to your compatible Garmin smartwatch1, so you can get the data you need no matter where you train. STORE AND FORWARD DATA During workouts such as strength training and HIIT, you can start and stop an activity on your compatible Garmin smartwatch1. Even if you remove your watch and leave it out of range, HRM-Fit stores the data then sends it to your watch when your activity is saved. ACTIVITY TRACKING If you aren’t wearing your watch, the heart rate monitor captures steps, calories burned, intensity minutes and all-day heart rate. It even updates all your Garmin devices via the Garmin Connect™ smartphone app. BATTERY LIFE Don’t worry about running out of juice. The HRM-Fit monitor gets up to 1 year of battery life.
$999.99
fenix 7X Pro Sapphire Solar is the ultimate multisport GPS smartwatch with a large 1.4" display, designed to perform all day, every day. Get weeks of battery life with the scratch-resistant Power Sapphire solar charging lens. Meet any challenge with advanced training features such as hill score, which measures your climbing performance over time, and real-time stamina updates to gauge your stamina potential. For a more complete picture of your health, training and recovery, tap in to 24/7 health and wellness monitoring with advanced sleep tracking, HRV status, Pulse Ox and more (this is not a medical device, and data presented is intended to be a close estimation of metrics tracked; Pulse Ox not available in all countries). When the sun sets, use the LED flashlight to stay visible or find your way. Navigate with preloaded TopoActive maps and ski resort maps; download even more regions for global adventures. Adventure far off the grid with up to 37 days of battery life in smartwatch mode with solar charging in 3 hours of direct sunlight (50,000 lux) per day. Gain superior positioning accuracy while optimizing battery life, thanks to multi-band GPS with SatIQ technology.