Kjell Sullivan

REI Bike Technician

Kjell Sullivan is a bike technician at the REI Co-op store in Bend, Ore.

Latest Articles

Buying Advice
How to Choose Mountain Bike Tires
135 reviews with an average rating of 4.1 out of 5 stars
Learn how tire size and width, lug patterns, tubeless options and rubber types can affect performance when you upgrade mountain bike tires.
Skills
Tubed vs. Tubeless: Should I Upgrade My Tires?
278 reviews with an average rating of 4.3 out of 5 stars
Learn the pros and cons of upgrading from tubed to tubeless tires and get installation tips if you plan to make the switch to tubeless.
Care and Repair
How to Set Up Your New Mountain Bike
68 reviews with an average rating of 4.4 out of 5 stars
Learn tips for setting up your new mountain bike, including adjusting saddle height, brake levers, shifters, tire pressure and suspension.