Used Mountain Bikes For Sale
Shop the largest selection of used mountain bikes for sale, from full-suspension and hardtail to E-MTBs. Every bike is Certified Pre-Owned, professionally inspected, and backed by a 30-day money-back guarantee so you can upgrade with confidence. Buy second hand mountain bikes with confidence from TPC.
TPC - The Pro's Closet is the leader in buying and selling new and Certified Pre-Owned used bikes. With over 160,000+ customers served and 46,000 bikes sold. We ship nationwide from Thornton, CO, and our Ride Guides are here to help with sizing, fit, and finding the right mountain bike for your goals and budget.
Trek • Specialized • Santa Cruz • Giant • Yeti
Bikes are meant
to be used.
Used MTBs For Sale
Shop the largest inventory of the best used mountain bikes for sale with TPC. From used XC hardtails to used full-suspension trail and used enduro bikes, we have the perfect used MTB for every type of rider.
Find used XC and used trail hardtails that are budget performers. They provide efficiency and simplicity for endless laps with less maintenance. Or if you prefer, full-suspension MTBs provide extra comfort and confidence to tackle rougher and gnarlier trails, whether you’re deep in the backcountry or shredding at the downhill bike park. Looking for new adventures? Try a used fat bike or a used electric mountain bike (E-MTB). TPC carries hundreds of used mountain bikes from top brands like Trek, Specialized, and more.
Mountain Bike Sizing
Mountain bikes use lettered sizes (XS–XL), and wheel size (27.5" vs 29") can change how a bike fits and feels. Use the chart below as a starting point, then check our MTB sizing guide for brand-specific fit. Still unsure? A Ride Guide can help.MTB Size Chart
Rider Height (in) Rider Height (cm) Frame Size Frame Size (in) 4'10" - 5'2" 148-158cm X-Small (XS) 13" - 14" 5'3" - 5'6" 159-168cm Small (S) 15" - 16" 5'7" - 5'10" 169-178cm Medium (M) 17" - 18" 5'11" - 6'1" 179-185cm Large (L) 19" - 20" 6'2" - 6'4" 186-193cm X-Large (XL) 21" - 22" 6'4" and up 194cm + XX-Large (XXL) 23" +
Sizing varies by brand and model—reach and stack matter more than the sticker size.
Check our sizing guide for info on the best fit and geometry. Still not sure? Chat with a Ride Guide on your specific fit per brand.
Do You Need a Full-Suspension Mountain Bike?
It depends on your trails, budget, and how you like to ride.
Choose a hardtail if you want a lighter, simpler bike that climbs efficiently and needs less maintenance. Great for smoother trails, XC riding, and riders who want maximum value.
Choose full suspension if you ride rougher, more technical terrain and want more traction, comfort, and control—especially when speed picks up.
Suspension travel tip: shorter travel tends to climb better and feels snappier on smoother trails; longer travel is built for steep descents, high-speed chunk, and bigger hits. If you’re not sure where you land, our Ride Guides can point you to the right category.
Women's Mountain Bikes
What’s the difference between women-specific and unisex MTBs? Not much actually. Women-specific MTBs usually come down to contact points (saddle, grips, bars) and suspension tune, not a totally different bike. Most riders do great on unisex MTBs with the right size and a few easy swaps. If you want help narrowing down the best fit, chat with a Ride Guide. Check our women’s bike buyers guide for the deets.
Full Suspension Mountain Bikes
TPC has new and used full-suspension mountain bikes for sale to fit your needs. Bikes with rear suspension improve comfort by taking the sting out of rough terrain and improve performance by increasing traction and your ability to absorb hard hits out on the trail. Take on the gnarliest descents or an all-day cross-country epic; the choice is yours.
Hardtail Mountain Bikes
With no rear suspension, hardtail MTBs are more affordable and use fewer moving parts, so they’re cheaper and easier to maintain.
Choose a lightweight carbon hardtail with a 100-120mm suspension travel fork for XC racing. If you’re more interested in fun than racing, trail hardtails like the Kona Honzo are the ultimate quiver-killer machines. For gnarlier terrain, hardcore hardtails with long travel forks and slacker geometry let you plow through the roughest trails.
Why Buy A Used Mountain Bike
Every used mountain bike we sell is Certified Pre-Owned and goes through a multi-point professional inspection to make sure it’s ready to ride, not just ready to photograph.
Inspected & tested: Checked by our techs and test-ridden under load
Worn parts replaced: Damaged or worn components are replaced as needed
Suspension serviced: Fork and shock are inspected and serviced as required
30-day returns: If it’s not what you expected or the fit isn’t right, return it within 30 days
The Mountain Bike Spectrum: 6 MTB Types Explained - From TPC's Magazine
Mountain biking might be the most confusing discipline with the greatest diversity of bike categories. The mountain bike spectrum is huge and there is no single archetypal mountain bike. So what are the main mountain bike categories you should know and what are the differences? Read the full article here.
Trail Ready: The Best Beginner Mountain Bikes - From TPC's Magazine
With millions of miles of trail out there, there’s no better way to explore than on a bicycle. If you’re shopping for your first mountain bike, then you’re about to embark on a two-wheeled journey full of fun and adventure. Hopefully, you find a reliable trail companion that will stick with you for years to come. Read the full article here.
Keep shopping: Trail bikes • Enduro bikes • XC bikes • Hardtails • Full suspension • E-MTBs • MTB frames • MTB wheels • Sell your mountain bike
Sell Your Gear today and we can make an offer for your bike, frame, or wheelset within two business days and help you avoid the frustration and renegotiation of the secondary market.
Looking to service your bike in the Denver area? Book a full professional service now with our Service Center, located in Thornton, Colorado.
