Accessories
- APPAREL
  - FOOTWEAR
- BABY SEATS
- BAGS
- BASKETS
- BELLS & HORNS
- CAR RACKS
- CELL PHONE HOLDERS
- COMPUTERS
- GRIPS & TAPE
- HELMETS
- LIGHTS
- LOCKS
- MIRRORS
- NUTRITION
  - HYDRATION
- PUMPS
- RACKS
- STORAGE
- TOOLS
- TRAILERS
- TRAINERS
- TRAINING WHEELS
Components
- AXLE PEGS
- BEARINGS
- BOTTOM BRACKETS
- BRAKES
  - BRAKE LEVERS
  - BRAKE PADS
- CABLES
- CASSETTES & COGS
- CHAINRINGS
- CHAINS
  - CHAIN PROTECTORS
- CRANK ARMS & SETS
- DERAILLEURS
- FENDERS
- FORKS
- FRAMES
- FREEWHEELS
- GROUP KIT
- HANDLEBARS
- HEADSETS
- HUBS
- KICKSTANDS
- PEDALS
- SEATPOSTS
- SHIFTERS
- STEMS
- TIRES
- WHEELS
  - RIMS
  - SPOKES
Hot tentin
Contact

Login / Register

Accessories
- APPAREL
  - FOOTWEAR
- BABY SEATS
- BAGS
- BASKETS
- BELLS & HORNS
- CAR RACKS
- CELL PHONE HOLDERS
- COMPUTERS
- GRIPS & TAPE
- HELMETS
- LIGHTS
- LOCKS
- MIRRORS
- NUTRITION
  - HYDRATION
- PUMPS
- RACKS
- STORAGE
- TOOLS
- TRAILERS
- TRAINERS
- TRAINING WHEELS
Components
- AXLE PEGS
- BEARINGS
- BOTTOM BRACKETS
- BRAKES
  - BRAKE LEVERS
  - BRAKE PADS
- CABLES
- CASSETTES & COGS
- CHAINRINGS
- CHAINS
  - CHAIN PROTECTORS
- CRANK ARMS & SETS
- DERAILLEURS
- FENDERS
- FORKS
- FRAMES
- FREEWHEELS
- GROUP KIT
- HANDLEBARS
- HEADSETS
- HUBS
- KICKSTANDS
- PEDALS
- SEATPOSTS
- SHIFTERS
- STEMS
- TIRES
- WHEELS
  - RIMS
  - SPOKES
Hot tentin
Contact

Accessories
- APPAREL
  - FOOTWEAR
- BABY SEATS
- BAGS
- BASKETS
- BELLS & HORNS
- CAR RACKS
- CELL PHONE HOLDERS
- COMPUTERS
- GRIPS & TAPE
- HELMETS
- LIGHTS
- LOCKS
- MIRRORS
- NUTRITION
  - HYDRATION
- PUMPS
- RACKS
- STORAGE
- TOOLS
- TRAILERS
- TRAINERS
- TRAINING WHEELS
Components
- AXLE PEGS
- BEARINGS
- BOTTOM BRACKETS
- BRAKES
  - BRAKE LEVERS
  - BRAKE PADS
- CABLES
- CASSETTES & COGS
- CHAINRINGS
- CHAINS
  - CHAIN PROTECTORS
- CRANK ARMS & SETS
- DERAILLEURS
- FENDERS
- FORKS
- FRAMES
- FREEWHEELS
- GROUP KIT
- HANDLEBARS
- HEADSETS
- HUBS
- KICKSTANDS
- PEDALS
- SEATPOSTS
- SHIFTERS
- STEMS
- TIRES
- WHEELS
  - RIMS
  - SPOKES
Hot tentin
Contact

View all results (0)

Home / Collections / COMPUTERS / HAMMERHEAD MOUNT QUARTER TURN ADAPTER BLACK

HAMMERHEAD MOUNT QUARTER TURN ADAPTER BLACK

HAMMERHEAD

HAMMERHEAD MOUNT QUARTER TURN ADAPTER BLACK

$38.75

| /

This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.

Accessories and additional adapters for the Hammerhead Karoo cycling computer

who are you?

This was once a local bicycle shop outside of Yosemite National Park, before the internets took over our lives we used to rent customers two wheeled transportation for mountain funsies.

Now we sell our wares on this beautiful terrifying system that Al Gore created.

21,761 lifetime reviews. 21,673 times customers felt we did our job.

Missoula, MT, United States

info@jjswheeliecoolshop.com

713.805.6272

Privacy Policy-Refund Policy-Shipping Policy-Terms of service

Copyright © 2025 JJs Wheelie Cool Shop.
Powered by Shopify.

Close