J

• Jag Wire Cables 
• Jandd Mountaineering - Manufacturer of fine panniers, racks, messenger bags and more since 1983.
• Java Velo

• JET Designs
• JogMate
• JT Sportswear

 K

• K2/Noleen Suspension
• K-Products
• Kenda
• King Cage
• Knightlite
• Kink
• Koobi Saddles
• Konnix Bags
• Kooka Components
• Kool Stop

• Kore Bicycle Components
• Koulius Zaard
• Kovachi Wheels
• Kreitler Rollers
• Kryptonite
• Kule Komponents

 L

• Lab Gear
• Lake Cycling
• Large Hardwear Clothing
• Launch Wear
• Leatherman
• Leppin Squeezy
• Light and Motion Industries
• L.L. Bean

• Lone Peak Designs
• Look
• Louis Garneau
• LP Composites
• Lumicycle UK Ltd

 M

• Mach 1
• Magura
• Marzocchi
• Marwi USA Spokes
• Mavic
• Maxxis Tires
• MDI Suspension
• Michelin Tires
• Miche
• McMahon Racing Bikes
• Macneil
• Met Helmets
• MET-Rx
• Middleburn Components
• Minoura

• Mo Hotta~Mo Betta
• Modolo
• Mojo
• Monk a Moo, Inc Mountain Bike Components - Monk a Moo Inc. specializes in offering high end downhill, freeride, and xc mountain bike components for sale via a comprehensive online ordering system.
• MountainBoard Sports
• Mountain Speed
• Morati Titanium Components
• Mountain Speed
• Moxey Suspension Seatposts
• Mr. Dirt
• Mt. Borah Designs
• Mud Machine
• Multi-Fit Adult Training/Stabilizing Wheels - First training/stabilizing wheels for adult sized bicycles, one size fits ALL adult bicycles.
• Mushroom Tip

 N

• NC-17
• Native Eyewear
• Nema USA
• Newk Products
• Night Sun Performance Lighting
• NGear
• Nike

• Nimble Wheels UK
• Niterider Lighting Systems
• Nokian Tyres
• NK Racing
• Northwave Shoes
• Nuke Proof
• Nytex

 O

• Oakley Inc.
• Odyssey BMX

• Onza Components
• Oury Grips

 P

• Pace
• Pace Sportswear
• Packasport
• Park Tools
• Parrot Performancewear
• Panaracer Tires
• Patagonia
• Paul Component Engineering
• Pazzaz Components
• Pearl Izumi Technical Wear
• PedalPack
• Pedro's
• Peet's Coffee and Tea
• Pells
• Phil Wood and Co.
• Pizzaz

• Platypus
• Point
• Polar Heart Rate Monitors
• Post Moderne
• Powerbar
• Prowell Helmets
• Primal Wear Clothing
• Primo Products
• PR Nutrition Bar
• Profile Racing and Design
• Promax USA
• ProSupergo
• Prowheel
• ProLyte Energy Drinks
• Psoas
• Psycle Werks

 Q

• Qranc Accessories
  

 R

• Race Face
• Racing Cyclist
• RAV-X - Component company from South Africa, from foot pumps to multi-tools; mitts to tyres; locks to chain-breakers.
• Razor Rock Racing
• RB Design
• R C R Components - website down
• RCR Suspension - website down
• Real Design
• Rec-Rac
• Red Dust Productions
• Respro
• Revcon Bearings Inc.
• Revi Wear

• Revo Cycling Glasses
• Rhino Racing Components
• Ride ATI
• Ridge Sports (Canada)
• Rigida
• Risse Racing
• Ritchey
• Rivendell Bicycle Works
• RNH Clothing
• Roach Clothing
• Rock Shox
• ROC Racing
• Rohloff
• Rolf Wheels
• Rond/Magura
• Roox
• RST Suspension
• Rudelli