Skip to content
Free Shipping at $150* | Click Here To Learn More!
Sign up for our Newsletter
Sign up to hear about sales, events and promotions!
Go
Close
Menu
Search
Log in
Create account
0
Cart
Item added to your cart
View my cart (0)
Check out
Continue shopping
Home
Bike
Bikes
Hardtail Mountain Bikes
Full Suspension Mountain Bikes
Road Bikes
Electric Bikes
Commuter & Urban Bikes
Comfort, Hybrid & Fitness Bikes
Cargo Bikes
Cruiser Bikes
Gravel Bikes
Children's Bikes
Helmets
Adult Helmets
Kids' Helmets
Clothing
Jerseys & Tops
Jackets & Vests
Shorts/Bottoms
Chamois & Liner Shorts
Gloves
Socks
Protective Pads & Armor
Shoes
Mountain Flat Pedal Shoes
Mountain Clipless Shoes
Road Clipless Shoes
Parts
Bottom Brackets
Bike Brakes, Levers, Rotors, & Pads
Cassettes & Freewheels
Chainrings
Chains
Cranksets
Derailleurs
Handlebar Grips & Tape
Handlebars
Pedals
Saddles & Pads
Seatposts & Parts
Shifters
Stems
Tires
Tubes
Wheels
Accessories
Body Care
Bicycle Bells
Bike Computers & Holders
Child Seats
Cycling Lights
Cycling Mirrors & Safety Gear
Exercise Food, Drinks, & Supplements
Fenders
Hydration Packs & Bottles
Locks & Security
Packs, Racks & Baskets
Pumps & Inflation
Sunglasses & Eyewear
Tools & Maintenance
Water Bottle Cages
Bike Trainers
Trailers & Strollers
Clothing
Men's Clothing
Snow Jackets
Snow Pants
Jackets
Fleece
Pants
Shorts
Shirts
Vests
Footwear
Underwear
Baselayers
Hats & Headwear
Gloves & Mittens
Socks
Women's Clothing
Snow Jackets
Snow Pants
Jackets
Vests
Sweaters
Fleece
Shirts
Pants
Shorts
Skirts & Dresses
Jumpsuit & Romper
Underwear
Baselayers
Swimwear
Footwear
Hats & Headwear
Gloves & Mittens
Socks
Kid's Clothing
Kid's Pants & Shorts
Kid's Shirts
Kid's Jackets
Kid's Footwear
Clothing Accessories
Women's Clothing Accessories
Men's Clothing Accessories
Kid's Clothing Accessories
Sunglasses & Eyewear
Wallets & Money Clips
Hats & Headwear
Footwear Accessories
Snow
Alpine, AT, & Telemark Ski
Alpine, Alpine Touring & Telemark Skis
Alpine, Alpine Touring Boots & Telemark Boots
Alpine, Alpine Touring & Telemark Bindings
Alpine & Backcountry Ski Poles
Climbing Skins
Nordic Ski Equipment
Touring Skis
Touring Boots
Skate Skis
Skate Boots
Skate Bindings
Classic Skis
Classic Boots
Classic Bindings
Nordic Ski Poles & Accessories
Snowboard Equipment
Snowboards
Snowboard Boots
Snowboard Bindings
Snowshoes
Snow Accessories
Snow Goggles
Snow Helmets
Gloves & Mittens
Snow Backpacks
Ski, Snowboard & Boot Bags
Ski Wax & Waxing Tools
Winter Accessories
Avalanche Safety
Outdoors
Backpacks & Duffel Bags
Backpacking & Hiking Packs
Hydration Packs
Everyday & Lifestyle Packs
Duffel Bags
Luggage & Travel Bags
Pack Accessories
Sleeping Bags & Pads
Sleeping Bags
Outdoor Blankets
Sleeping Pads & Accessories
Sleeping Accessories
Camp Kitchen
Cookware
Drinkware
Stoves
Coolers
Water Filters & Water Storage
Camping & Backpacking Food
Camp Furniture
Chairs
Tables
Hammocks
Tents & Accessories
Tents
Tent Accessories
Dog Gear
Dog Collars & Leashes
Dog Packs, Jackets, & Boots
Dog Toys
Dog Food
Bowls, Safety, Etc.
Trekking Poles
Adventure Books & Media
First-Aid & Health
Climbing Gear
Outdoor Electronics & Lighting
Camping Accessories
Knives
Car Racks
Roof Top Rack Systems
Roof Top Bike Racks
Roof Top Cargo Boxes
Ski Racks
Tailgate Pads
Trunk Mount Racks
Water Sports Racks
Car Rack Accessories
Hitch Mount Racks
Gift Card
Service
Bicycle Service & Repair
Ski and Snowboard Service & Repair
Bike Rentals
About Us
Log in
Create account
Close
Home
Bike
Bikes
Hardtail Mountain Bikes
Full Suspension Mountain Bikes
Road Bikes
Electric Bikes
Commuter & Urban Bikes
Comfort, Hybrid & Fitness Bikes
Cargo Bikes
Cruiser Bikes
Gravel Bikes
Children's Bikes
Helmets
Adult Helmets
Kids' Helmets
Clothing
Jerseys & Tops
Jackets & Vests
Shorts/Bottoms
Chamois & Liner Shorts
Gloves
Socks
Protective Pads & Armor
Shoes
Mountain Flat Pedal Shoes
Mountain Clipless Shoes
Road Clipless Shoes
Parts
Bottom Brackets
Bike Brakes, Levers, Rotors, & Pads
Cassettes & Freewheels
Chainrings
Chains
Cranksets
Derailleurs
Handlebar Grips & Tape
Handlebars
Pedals
Saddles & Pads
Seatposts & Parts
Shifters
Stems
Tires
Tubes
Wheels
Accessories
Body Care
Bicycle Bells
Bike Computers & Holders
Child Seats
Cycling Lights
Cycling Mirrors & Safety Gear
Exercise Food, Drinks, & Supplements
Fenders
Hydration Packs & Bottles
Locks & Security
Packs, Racks & Baskets
Pumps & Inflation
Sunglasses & Eyewear
Tools & Maintenance
Water Bottle Cages
Bike Trainers
Trailers & Strollers
Clothing
Men's Clothing
Snow Jackets
Snow Pants
Jackets
Fleece
Pants
Shorts
Shirts
Vests
Footwear
Underwear
Baselayers
Hats & Headwear
Gloves & Mittens
Socks
Women's Clothing
Snow Jackets
Snow Pants
Jackets
Vests
Sweaters
Fleece
Shirts
Pants
Shorts
Skirts & Dresses
Jumpsuit & Romper
Underwear
Baselayers
Swimwear
Footwear
Hats & Headwear
Gloves & Mittens
Socks
Kid's Clothing
Kid's Pants & Shorts
Kid's Shirts
Kid's Jackets
Kid's Footwear
Clothing Accessories
Women's Clothing Accessories
Men's Clothing Accessories
Kid's Clothing Accessories
Sunglasses & Eyewear
Wallets & Money Clips
Hats & Headwear
Footwear Accessories
Snow
Alpine, AT, & Telemark Ski
Alpine, Alpine Touring & Telemark Skis
Alpine, Alpine Touring Boots & Telemark Boots
Alpine, Alpine Touring & Telemark Bindings
Alpine & Backcountry Ski Poles
Climbing Skins
Nordic Ski Equipment
Touring Skis
Touring Boots
Skate Skis
Skate Boots
Skate Bindings
Classic Skis
Classic Boots
Classic Bindings
Nordic Ski Poles & Accessories
Snowboard Equipment
Snowboards
Snowboard Boots
Snowboard Bindings
Snowshoes
Snow Accessories
Snow Goggles
Snow Helmets
Gloves & Mittens
Snow Backpacks
Ski, Snowboard & Boot Bags
Ski Wax & Waxing Tools
Winter Accessories
Avalanche Safety
Outdoors
Backpacks & Duffel Bags
Backpacking & Hiking Packs
Hydration Packs
Everyday & Lifestyle Packs
Duffel Bags
Luggage & Travel Bags
Pack Accessories
Sleeping Bags & Pads
Sleeping Bags
Outdoor Blankets
Sleeping Pads & Accessories
Sleeping Accessories
Camp Kitchen
Cookware
Drinkware
Stoves
Coolers
Water Filters & Water Storage
Camping & Backpacking Food
Camp Furniture
Chairs
Tables
Hammocks
Tents & Accessories
Tents
Tent Accessories
Dog Gear
Dog Collars & Leashes
Dog Packs, Jackets, & Boots
Dog Toys
Dog Food
Bowls, Safety, Etc.
Trekking Poles
Adventure Books & Media
First-Aid & Health
Climbing Gear
Outdoor Electronics & Lighting
Camping Accessories
Knives
Car Racks
Roof Top Rack Systems
Roof Top Bike Racks
Roof Top Cargo Boxes
Ski Racks
Tailgate Pads
Trunk Mount Racks
Water Sports Racks
Car Rack Accessories
Hitch Mount Racks
Gift Card
Service
Bicycle Service & Repair
Ski and Snowboard Service & Repair
Bike Rentals
About Us
Home
50 Mm
Filter products
Sort by:
Featured
Most relevant
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old
Availability
In stock
1
Out of stock
0
Reset
Product type
Cycling Accessories
1
Reset
Price
From
$
To
$
Reset
Size
32 Mm
1
50 Mm
1
55 Mm
1
Reset
Brand
Trek
1
Reset
Close
50 Mm
Clear all
Filter
1 product
Sort by:
Featured
Most relevant
Best selling
Alphabetically, A-Z
Alphabetically, Z-A
Price, low to high
Price, high to low
Date, old to new
Date, new to old
Bontrager Round Base Tlr Valve Stem
Bontrager Round Base Tlr Valve Stem
Trek
From $10.99
From $10.99
Unit price
/
per
Choosing a selection results in a full page refresh.
