Skip to main content
Account
Account
Cart
Cart
(0)
Subtotal
:
$
0.00
Checkout
Cart
Free Shipping On Orders Over $150 (Bikes ship free $1500 and over)
Toggle navigation
Search
Search
Menu
x
Account
Cart
Bikes
Road
Road
Sport/Performance
Triathlon/Time Trial
Touring
Gravel
Road Frames
Track
Mountain
Mountain
Hardtail
Full-Suspension
29-Inch Wheel (29ers)
650B Wheel
Fat Bikes
Downhill/Freeride
Rigid
Dirt Jump
Mountain Frames
29-Inch Plus Wheel
27.5-Inch Plus Wheel
26-Inch Wheel
Cyclocross
Cyclocross
Cyclocross Bikes
Cyclocross Frames
Commuter/Urban
Commuter/Urban
Single-Speed
Multi-Speed
Frames
Comfort
Comfort
Cruiser
Cruiser
Fitness
Fitness
Hybrid
Hybrid
Children's
Children's
12-Inch (2-4 yr. old)
14-Inch (3-5 yr. old)
16-Inch (3-6 yr. old)
20-Inch (5-8 yr. old)
24-Inch (7+ yr. old)
Balance Bikes
BMX
BMX
BMX
Freestyle
Jump
BMX Frames
Other
Other
Folding
Recumbent
Tandem
Tricycles
Unicycles
Brands
Giant Bicycles
Pivot Cycles
Yeti Cycles
Scott
Kona
Pinarello
Cervelo
Accessories
E-bike Batteries/Kits
E-bike Batteries/Kits
BMX Gear
BMX Gear
Body Care
Body Care
Children's-Bike Accessories
Children's-Bike Accessories
Child Seats
Child Seats
Electronics
Electronics
Cameras
Parts & Accessories
Cyclo-Computers
GPS
Heart-Rate Monitors
Phone Accessories
Power Meters
Sports Watches
Eyewear
Eyewear
Accessories/Lenses
Glasses
Goggles
Fenders
Fenders
Hydration
Hydration
Parts & Accessories
Bottles/Cages
Packs/Systems
Lighting
Lighting
Parts & Accessories
Combos/Systems
Headlights
Taillights
Locks/Security
Locks/Security
Parts & Accessories
Cables/Chains
Lock Set
Padlocks
U-Locks
Other
Media/Resources
Media/Resources
Books
Nutrition
Nutrition
Bars
Drinks
Gels/Chewables
Supplements
Packs/Racks/Baskets
Packs/Racks/Baskets
Parts & Accessories
Backpacks
Baskets
Frame Bags
Gear Bags
Handlebar Bags
Messenger Bags
Packs
Panniers
Rack-Top Bags (trunks)
Racks
Seat Bags
Pumps/Inflation
Pumps/Inflation
Parts & Accessories
CO2 Inflators
Floor Pumps
Frame Pumps
Mini Pumps
Shock Pumps
Recumbent
Recumbent
Safety
Safety
Bells/Noise Makers
Mirrors
Reflective Items
Storage
Storage
Tools/Maintenance
Tools/Maintenance
Lubes/Cleaners
Tools
Workstands
Trailers/Strollers
Trailers/Strollers
Parts & Accessories
Cargo Trailers
Child Trailers
Trailer Bikes
Indoor Cycling
Indoor Cycling
Parts & Accessories
Rollers
Trainers
Smart Trainers
Travel Cases
Travel Cases
Other
Other
Components
Bar Ends
Bar Ends
BMX
BMX
Bottom Brackets
Bottom Brackets
Brakes/Levers/Pads
Brakes/Levers/Pads
Cables
Cables
Cassettes/Freewheels
Cassettes/Freewheels
Chainrings
Chainrings
Chains
Chains
Cranksets
Cranksets
Parts & Accessories
Cranksets
Derailleurs
Derailleurs
Front
Rear
Forks
Forks
Rigid
Suspension
Groups
Groups
Handlebar Grips/Tape
Handlebar Grips/Tape
Grips
Tape
Handlebars
Handlebars
Aero
Drop
Flat
Riser
Other
Headsets
Headsets
Pedals
Pedals
Parts & Accessories
Pedals
Recumbent
Recumbent
Saddles
Saddles
Seatposts
Seatposts
Shift/Brake Combinations
Shift/Brake Combinations
Shifters
Shifters
Shocks
Shocks
Stems
Stems
Other
Other
More
Menu has
items
Bikes
Bikes
Road
Mountain
Cyclocross
Commuter/Urban
Comfort
Cruiser
Fitness
Hybrid
Children's
BMX
Other
Electric
Electric
E-Bikes
Wheels
Wheels
Parts & Accessories
Wheels
Hubs
Rims
Spokes
Parts
Parts
Bar Ends
BMX
Bottom Brackets
Brakes/Levers/Pads
Cables
Cassettes/Freewheels
Chainrings
Chains
Cranksets
Derailleurs
Forks
Groups
Handlebar Grips/Tape
Handlebars
Headsets
Pedals
Recumbent
Saddles
Seatposts
Shift/Brake Combinations
Shifters
Shocks
Stems
Other
Accessories
Accessories
E-bike Batteries/Kits
BMX Gear
Body Care
Children's-Bike Accessories
Child Seats
Electronics
Eyewear
Fenders
Hydration
Lighting
Locks/Security
Media/Resources
Nutrition
Packs/Racks/Baskets
Pumps/Inflation
Recumbent
Safety
Storage
Tools/Maintenance
Trailers/Strollers
Indoor Cycling
Travel Cases
Other
Tires/Tubes
Tires/Tubes
Parts & Accessories
Tires
Tubes: All Sizes/Types
Clothing
Clothing
Accessories
Gloves
Jerseys/Tops (Short Sleeve)
Outerwear
Protective/Armor
Running
Jerseys/Tops (Long Sleeve)
Shirts/Tops (Casual)
Shorts/Bottoms
Shorts/Bottoms (Casual)
Socks
Triathlon
Undergarments
Helmets
Helmets
Parts & Accessories
Adults
Kids
Shoes
Shoes
Casual Shoes
Parts & Accessories
Cycling Shoes
Car Racks
Car Racks
Accessories/Parts
Hitch-Mount
Pickup/RV/Spare-Tire Mount
Roof-Mount
Trunk-Mount
Services
Bicycle Service
Bicycle Rental
Ski / Snowboard Service
Ski / Snowboard Rental
Contact
Home
Bicycling Catalog
Parts
Chainrings
BOX
Cosine Chainring
BOX
Cosine Chainring
$54.99
Size:
Select Size
38t
40t
42t
44t
Color:
Black
Availability:
Please select options
Unavailable
Shipping options
Deliver to Address
This item is eligible for delivery in select areas. View available options in checkout.
Shipping options
Pick up in Store
Quantity
Add to Cart
Add to Wish List
Details
Details
- CNC-machined 6061-T6 aluminum with rounded tooth profile to reduce chain wear
X
