Skip to main content

Filter By:

Mountain Bikes

Golden Bear Bikes in Broomfield & Lakewood has the area's best selection of Mountain bikes. From entry level mountain bikes for beginners to advanced cross country and enduro bikes for seasoned athletes we have it all. Come let our friendly expert staff help you find the mountain bike that is perfect for your needs and riding style. 

Trek Roscoe 7
$1,349.99
Roscoe 7 is a mid-fat trail hardtail for riders who favor a fun and lively ride. Confidence-inspiring 27.5+ wheels and plus-sized tires, a plush suspension fork, and a wide-range drivetrain with plenty of gears make Roscoe 7 stable enough for new riders, and playful enough to make even the most experienced shredders smile. It's right for you if... You're new to the trail and want a fun and accessible hardtail that keeps you confident and in control when the trail gets rough. Or, you're a more experienced trail rider and you want a bike with more traction that knows how to party when you're out riding with friends. The tech you get Roscoe 7 features a strong Alpha Gold Aluminum frame with internal routing for cable protection and a clean look, confidence-inspiring 27.5+ tires mounted to Tubeless Ready Bontrager Line rims, 2.8-inch mid-fat tires, and a 120mm RockShox Judy SL fork with a TurnKey hydraulic lockout. It's equipped with a reliable SRAM SX Eagle 1x12 drivetrain, hydraulic disc brakes, and a dropper post for extra room on rough trails. The final word When you're riding Roscoe 7, it doesn't matter if you're a first-timer or an off-road pro—whatever your skill level, you're gonna have fun. It's built for ease of use and durability, so you can focus on enjoying the trail ahead. Why you'll love it - It's more fun to be a better rider: Roscoe is so stable and forgiving, it's like an instant ability upgrade - A shorter stem and wider handlebar make it easier to control - Even when the trail gets rough, the wide 27.5+ tires deliver more confidence, traction, and stability - The dropper post lets you lower your saddle on the fly so it's out of the way on descents - The RockShox fork's Solo Air spring can easily be adjusted for a specific rider weight, and it's lighter than a coil spring
Trek Marlin 4
$579.99
Marlin 4 is the perfect gateway to trail riding. It's ideal for new riders who want a mountain bike with knobby tires that can double as a rugged commuter. Disc brakes, front suspension, 21 speeds, and mounts for a rack and fenders make this a great bike for new trail riders and campus commuters alike. It's right for you if... You want an introductory mountain bike at an incredible price but also want a commuter that's rugged enough to hop curbs on the way to class. The tech you get A lightweight aluminum frame with internal routing to protect your cables and add to the bike's sleek look, 21 speeds, a wide range of gearing so you always have the right gear for your terrain, powerful mechanical disc brakes, and a suspension fork that takes the edge off bumps and rough terrain. The final word Marlin is made for any adventure. The rack and fender mounts make it a great choice for commuters who want to get a little rad on the way to class or the grocery store. Why you'll love it - It's a real mountain bike that's also perfectly suited to daily commutes, rides around campus, or just getting from A to B on any surface - Rack and fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - Smaller frame sizes (XS and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently - Marlin models in XS and S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount - Like every model in the Marlin family, it's backed by Trek's lifetime warranty Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Medium – XX-Large: 29-inch
Trek Marlin 5
$699.99
Marlin 5 is a trail-worthy daily rider that's perfectly suited for everyday adventures, on and off the trail. A suspension fork, 2x8 drivetrain, and mounts for a rack and kickstand make it an ideal choice for new trail riders or anyone looking for a comfortable, stable commuter with the ruggedness of a real mountain bike. It's right for you if... You're new to the trail, and you're looking for a real mountain bike that doubles as a commuter—and you want it all at an exceptional value. The tech you get A lightweight aluminum frame with internal routing to protect your cables and add to the bike's sleek look, 2x8 drivetrain, a wide range of gearing so you always have the right gear for your terrain, powerful hydraulic disc brakes, and a terrain-smoothing suspension fork with a lockout. The final word Marlin 5 is a great ride for all your adventures. But it's also versatile, and Marlin 5 is a popular ride on college campuses, because the rack and kickstand mounts make it easy to accessorize and haul a load. Why you'll love it - It's a real mountain bike that's also perfectly suited to daily commutes, rides around campus, or just getting from A to B on any surface - Smaller frame sizes (XXS, XS, and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently - Marlin models in XXS through S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount - Rack and kickstand mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - Like every model in the Marlin family, it's backed by Trek's lifetime warranty Wheel size: - Size XX-Small: 26-inch - Sizes X-Small – Small: 27.5-inch - Sizes Medium – XX-Large: 29-inch
Surly ECR 29+
$1,900.00
The ECR is Surly's answer to those times when you just need to escape to the woods for a while to get away from the humdrum of life. Those familiar with this steel mule know it’s designed around plus tires, previously of the 29” variety. A fully loaded 29+ bike is an excellent way to explore and get away for a while… if you’re of a certain stature that is. For smaller riders, it poses several challenges though. And no one wants new problems when they’re in the woods trying to escape old ones. To solve this, Surly redesigned the smaller sizes of the ECR to work with 27.5+ while the larger sizes are still equipped with 29+. All you medium specimens out there get your pick of the litter as Surly is offering that size in both options. Other updates to the ECR include and are limited to: Gnot-Boost rear spacing and a killer new beige paint job. It retains the abundant accessory mounts that we all know and love like Surly Trip Guide for brakes and derailleurs, fender, rack, and Bill/Ted eyelets, and a Rohloff torque arm slot. The 29+ sizes have two water bottle mounts and one set of Three-Pack bosses. You’ve got lots of options to bring all your “necessities” with you and still have room for excess baggage if you’ve got it.
Trek Marlin 7
$979.99
Marlin 7 is where race-worthy mountain bikes begin. The smooth, lightweight RockShox fork and upgraded parts make this model the best choice for new riders who want a fast cross country hardtail that will hold its own against our higher-end race bikes. It's right for you if... - You're new to the trail but have serious singletrack aspirations, and want a race-worthy mountain bike with upgrades on the parts that make a big difference in performance, like a higher quality suspension fork and a wide-range 1x drivetrain. The tech you get - A light frame with internal shift cable and brake hose cable routing, a smoother-feeling RockShox Judy fork with a lockout, Shimano hydraulic disc brakes, and a simple 1x drivetrain that ditches the front derailleur for less clutter and easier operation. Don't worry, with the wide-range 11-46 cassette, you still get all the gears you need for clawing up climbs and blazing down descents. The final word - The RockShox suspension, wide range of gearing, and quality parts make it the best choice in the Marlin lineup for new mountain bikers who know they want a serious bike for their money. It’s fully capable of taking on off-road marathon rides and XC races. Why you'll love it - This is one of our most popular bikes for good reason. You get all the value, plus all the versatility—it's a totally race-worthy mountain bike, with rear rack mounts if you use it for commuting too - It's really fun to ride, and feels like a much more expensive mountain bike - Great suspension at an even better price - The 1x drivetrain gives you all the gears you need and none you don’t - Marlin models in XS and S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount Wheel size: Size X-Small – Small: 27.5-inch Sizes Medium – XX-Large: 29-inch
Surly Troll Frameset
$675.00
Off-road touring can be a zesty enterprise, but it's not without its perils. Bicycles are simple machines that are extremely efficient, but all simple machines carry along with them the chance of breaking down. This efficiency can get you in trouble if your bike decides to break down far away from the comforts of your parent's basement. If you’re going to ride your bicycles where no one can see, you better take gear that's up to the task. Troll is up to the task. Surly's Troll was once a simple mountain bike frame with a few extras that made it nice for touring. The Troll has evolved into a frame that has been pushed deeper into the category of off-road touring. Its geometry is no longer suspension corrected, which gives it more room for a larger frame bag. Surly also adorned this frame with their Gnot-Boost spacing, allowing you to use any mountain bike hub whether it be 135mm QR, 12 x 142mm thru-axle, or 12 x 148mm Boost hub. The chainstay yoke has been redesigned to be fully compatible with 26+ tires and the complete bike comes with the always-comfy Surly Moloko Bar. The dropouts still allow you to run disc brakes, fenders, a Rohloff hub, and racks simultaneously. It also comes with more braze-ons than you thought possible – there are four triple bottle mounts on the fork alone (don't get excited, you can only run one Anything Cage per fork leg), as well as two more triple bottle mounts on the downtube. Troll is a bike that has one purpose – and that purpose is to carry you as far away from society as possible. Man has known for eons the call of the indifferent forest. The inexorable march of time, and dumb things like cell phones, have dulled our senses and made us afraid. Reclaim your animalistic tendencies atop Man's greatest invention.
Surly Troll Frameset
$675.00
Off-road touring can be a zesty enterprise, but it’s not without its perils. Bicycles are simple machines that are extremely efficient, but all simple machines carry along with them the chance of breaking down. This efficiency can get you in trouble if your bike decides to break down far away from the comforts of your parent’s basement. If you’re going to ride your bicycles where no one can see, you better take gear that’s up to the task. Troll is up to the task. Surly's Troll was once a simple mountain bike frame with a few extras that made it nice for touring. The Troll has evolved into a frame that has been pushed deeper into the category of off-road touring. Its geometry is no longer suspension corrected, which gives it more room for a larger frame bag. The chainstay yoke has been redesigned to be fully compatible with 26+ tires and comes with the always-comfy Jones Loop bar. The dropouts still allow you to run disc brakes, fenders, a Rohloff hub, and racks simultaneously. It also comes with more braze-ons than you thought possible – there are four triple bottle mounts on the fork alone (don’t get excited, you can only run one Anything Cage per fork leg), as well as two more triple bottle mounts on the down tube. Troll is a bike that has one purpose – and that purpose is to carry you as far away from society as possible.
Trek Fuel EX 7
$3,249.99
Fuel EX 7 shines when you're charging down tricky descents, where the upgraded suspension package comes in handy. A lightweight aluminum frame, tubeless ready wheels, and a reliable 1x12 SRAM NX Eagle drivetrain make this an awesome all-around full suspension mountain bike. It's right for you if... You want one bike that's fun to ride on every trail, and you want upgraded parts, like a smoother DebonAir spring fork and a completely tubeless setup for less weight and more traction. The tech you get A light yet stiff alloy frame, a 140mm RockShox fork with a DebonAir spring for better small-bump compliance, and a FOX shock. A 1x12 SRAM NX Eagle drivetrain with a wide gear range. Plus, Bontrager Line Comp 30 wheels with tubeless tires and a dropper post. The final word Fuel EX 7 is a great all-around trail bike for a wide variety of terrain. It has upgrades where it matters most, like the suspension, drivetrain, and tubeless ready Bontrager wheels. Why you'll love it - You get more traction and control with upgraded parts you won't outgrow right away as your skills progress - You're getting a solid trail bike that's ready for anything you are - The dropper post lets you lower your saddle on the fly so it's out of the way on descents - Wide Line Comp 30 wheels provide more tire support so you get better traction and control - We expanded our size range to ensure a better fit for all riders. And, you get the fastest wheel that fits your frame: XS frames get 27.5-inch wheels, S frames get to choose between 27.5-inch or 29-inch, and sizes M to XL get 29-inch wheels
Trek Marlin 8
$1,299.99
Marlin 8 is a race-worthy mountain bike that won't break the bank. The smooth, lightweight RockShox fork, tubeless ready wheels, and wide-range 1x drivetrain make this model the best choice for new riders who want a fast cross country hardtail that will hold its own against our higher-end race bikes. It's right for you if... You want a race-ready mountain bike with upgrades on the parts that make a big difference in performance, like a lighter, higher quality suspension fork, wide-range 1x drivetrain, and tubeless ready wheels. The tech you get A light frame with internal cable routing, a smoother-feeling RockShox Judy Silver fork with a Solo Air spring and TurnKey hydraulic lockout, Shimano hydraulic disc brakes, tubeless ready Bontrager Kovee wheels, and a simple 1x12 drivetrain that ditches the front derailleur for less clutter and easier operation. The wide-range 11-50 cassette gives you all the gears you need for clawing up climbs and blazing down descents. The final word The tubeless ready wheels, RockShox suspension, wide range of gearing, and quality parts make it an awesome choice for new mountain bikers who know they want a serious bike for their money. It's fully capable of taking on big trail adventures and XC races. Why you'll love it - This is one of our most popular bikes for good reason. You get all the value, plus all the versatility—it's a totally race-worthy mountain bike with rear rack mounts if you use it for commuting too - The RockShox fork's Solo Air spring can easily be adjusted for a specific rider weight, and it's lighter than a coil spring - Setting your wheels up tubeless reduces the overall weight of your bike and the chances you'll get a flat - The 1x drivetrain gives you all the gears you need and none you don't - Marlin models in XXS through S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount Wheel size: - Size XX-Small: 26-inch - Sizes X-Small – Small: 27.5-inch - Sizes Medium – X-Large: 29-inch
Trek Marlin 6
$799.99
Marlin 6 is a cross country mountain bike built to give you an efficient off-road ride with a suspension fork that locks out, and a simple 1x drivetrain. It's made for mountain biking, but it's also equipped with features like rack and kickstand mounts that make it a great choice for adventurous daily commutes. It's right for you if... You're testing the waters of off-road riding and want a real mountain bike at a great value with a wide range of gears to cover more ground on the road and trail. The tech you get A lightweight aluminum frame with internal routing to protect your cables and add to the bike's sleek look, powerful hydraulic disc brakes, and a simple 1x10 Shimano drivetrain that ditches the front derailleur for less clutter and easier operation. The wide-range cassette still gives you all the gears you need for big climbs and steep descents. Plus, a suspension fork with a lever that lets you easily lock the suspension so you don't waste energy on smooth terrain. The final word Marlin 6 gives you upgrades you'll notice on every ride, like the smooth, simple shifting Shimano drivetrain. Extra-strong, double-walled rims and powerful hydraulic disc brakes give you durability and stopping power for your most rugged adventures on the trail, in town, and everywhere in between. Why you'll love it - The 1x drivetrain gives you all the gears you need and none you don't - Smaller frame sizes (XXS, XS, and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently - Marlin models in XXS through S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount - Rack and kickstand mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - Like every model in the Marlin family, it's backed by Trek's lifetime warranty
Page 1 of 1