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Giant Mountain Bikes

Check out all our Giant mountain bikes for sale at Bob's Bikes

Giant mountain bikes come in lots of models that are perfect for local trails and epic adventures. Whether you're just starting off-road riding or you're constantly pushing your boundaries on steep, techy terrain, there's a Giant mountain bike you'll love.

Not sure which bike is right for you? Head over to our Giant Bikes Guide

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Or Shop All Giant Bikes to see everything from this iconic brand

Giant Reign Advanced Pro 29 0
$9,000.00
Go fast, get rowdy, nail new lines with total control. We took everything you love about the legendary Reign and re-imagined it for 29-inch wheels. It’s progressive, it’s confident, and it’s born to fly on aggressive enduro style terrain. When it comes to building the ultimate enduro machine, we look to Giant Factory Off-Road Team riders who are out there pushing the limits of their bodies and bikes. This bike is for them—and for everyone else who loves to charge hard. We engineered the geometry of the Advanced composite frame and swingarm around larger diameter 29-inch wheels. That means shorter chainstays, a longer toptube, and just the right angles with the headtube (65 degrees) and seattube (76.8 degrees). Then we gave it an updated Maestro suspension system with 146mm of rear suspension. Aided by a new trunnion-mount shock and Advanced Forged Composite rocker arm, we came up with a system that feels super plush, active and shreddable. Beyond that, the new Reign Advanced Pro 29 features everything you need in a pro-level enduro machine, including a cleanly routed dropper seatpost, the latest Giant WheelSystem with Boost hub spacing, and tubeless tires set up right out of the box. Race-bred suspension Maestro rear suspension developed and tested under extreme conditions of Enduro World Series races. A trunnion mount shock has a longer stroke and smoother feel, and the Advanced Forged Composite upper rocker arm adds stiffness while lowering overall frame weight. The trunnion mount also allows longer dropper posts. Progressive enduro geometry The Advanced-grade composite frameset features updated enduro-style geometry, so you can ride aggressive descents and rail corners with confidence. The 65/76.8-degree headtube/seattube angles with a 42/44mm fork offset produce confident front-end handling with high-speed stability and control. 29er confidence and control Larger 29-inch diameter wheels roll over rugged enduro terrain with improved balance and stability, giving you the momentum to crank up tough climbs and the confidence to fly on fast, technical descents.
Giant Reign Advanced Pro 29 1
$5,000.00
Go fast, get rowdy, nail new lines with total control. We took everything you love about the legendary Reign and re-imagined it for 29-inch wheels. It’s progressive, it’s confident, and it’s born to fly on aggressive enduro style terrain. When it comes to building the ultimate enduro machine, we look to Giant Factory Off-Road Team riders who are out there pushing the limits of their bodies and bikes. This bike is for them—and for everyone else who loves to charge hard. We engineered the geometry of the Advanced composite frame and swingarm around larger diameter 29-inch wheels. That means shorter chainstays, a longer toptube, and just the right angles with the headtube (65 degrees) and seattube (76.8 degrees). Then we gave it an updated Maestro suspension system with 146mm of rear suspension. Aided by a new trunnion-mount shock and Advanced Forged Composite rocker arm, we came up with a system that feels super plush, active and shreddable. Beyond that, the new Reign Advanced Pro 29 features everything you need in a pro-level enduro machine, including a cleanly routed dropper seatpost, the latest Giant WheelSystem with Boost hub spacing, and tubeless tires set up right out of the box. Race-bred suspension Maestro rear suspension developed and tested under extreme conditions of Enduro World Series races. A trunnion mount shock has a longer stroke and smoother feel, and the Advanced Forged Composite upper rocker arm adds stiffness while lowering overall frame weight. The trunnion mount also allows longer dropper posts. Progressive enduro geometry The Advanced-grade composite frameset features updated enduro-style geometry, so you can ride aggressive descents and rail corners with confidence. The 65/76.8-degree headtube/seattube angles with a 42/44mm fork offset produce confident front-end handling with high-speed stability and control. 29er confidence and control Larger 29-inch diameter wheels roll over rugged enduro terrain with improved balance and stability, giving you the momentum to crank up tough climbs and the confidence to fly on fast, technical descents.
Giant Reign 29 SX
$4,000.00
Choose your line and let ’er rip. From chunky alpine terrain to warp-speed park runs, this 29er eats up rugged terrain. Its smooth Maestro rear suspension and beefy 170mm fork help keep you in control no matter what comes your way. This all-new full-suspension 29er features a new ALUXX SL frameset, our latest Maestro rear suspension, and components that are aimed at technical descents. It’s engineered with progressive geometry that’s optimized for its 29-inch wheels. That means shorter chainstays, a longer toptube, and headtube/seattube angles that put you in the perfect position to slay all types of singletrack. The rear suspension gives you 146mm of smooth, active rear travel with a new trunnion mount shock and Advanced Forged Composite rocker arm. And this SX model features a longer travel 170mm fork for even more control on high-speed descents. Add in a host of other aggressive trail riding technologies, including a cleanly routed dropper seatpost, the latest Giant WheelSystem with Boost hub spacing, and tubeless tires set up right out of the box, and it’s ready to rip when you are. Race-bred suspension Maestro rear suspension and a longer travel 170mm fork developed and tested in Enduro World Series races. The trunnion mount rear shock has a longer stroke and smoother feel, and Advanced Forged Composite upper rocker arm adds stiffness while lowering overall frame weight. Progressive enduro geometry The frameset features updated enduro-style geometry, so you can ride aggressive descents and rail corners with confidence. The 65/76.8-degree headtube/seattube angles with a 44mm fork offset produce confident front-end handling with high-speed stability and control. 29er confidence and control Larger 29-inch diameter wheels roll over rugged enduro terrain with improved balance and stability, giving you the momentum to crank up tough climbs and the confidence to fly on fast, technical descents.
Giant Reign Advanced Pro 29 2
$4,000.00
Go fast, get rowdy, nail new lines with total control. We took everything you love about the legendary Reign and re-imagined it for 29-inch wheels. It’s progressive, it’s confident, and it’s born to fly on aggressive enduro style terrain. When it comes to building the ultimate enduro machine, we look to Giant Factory Off-Road Team riders who are out there pushing the limits of their bodies and bikes. This bike is for them—and for everyone else who loves to charge hard. We engineered the geometry of the Advanced composite frame and swingarm around larger diameter 29-inch wheels. That means shorter chainstays, a longer toptube, and just the right angles with the headtube (65 degrees) and seattube (76.8 degrees). Then we gave it an updated Maestro suspension system with 146mm of rear suspension. Aided by a new trunnion-mount shock and Advanced Forged Composite rocker arm, we came up with a system that feels super plush, active and shreddable. Beyond that, the new Reign Advanced Pro 29 features everything you need in a pro-level enduro machine, including a cleanly routed dropper seatpost, the latest Giant WheelSystem with Boost hub spacing, and tubeless tires set up right out of the box. Race-bred suspension Maestro rear suspension developed and tested under extreme conditions of Enduro World Series races. A trunnion mount shock has a longer stroke and smoother feel, and the Advanced Forged Composite upper rocker arm adds stiffness while lowering overall frame weight. The trunnion mount also allows longer dropper posts. Progressive enduro geometry The Advanced-grade composite frameset features updated enduro-style geometry, so you can ride aggressive descents and rail corners with confidence. The 65/76.8-degree headtube/seattube angles with a 42/44mm fork offset produce confident front-end handling with high-speed stability and control. 29er confidence and control Larger 29-inch diameter wheels roll over rugged enduro terrain with improved balance and stability, giving you the momentum to crank up tough climbs and the confidence to fly on fast, technical descents.
Giant Trance Advanced Pro 29 3
$3,350.00
Amp up your trail riding adventures with this all-conquering 29er. Whether you’re gunning for faster enduro times or bagging a big backcountry loop, do it like a boss on this big-wheeled singletrack shredder. It took years for our team of engineers, product designers and pro riders to create a new short-travel 29er that met their high standards. The wait was worth it. The latest iteration of this legendary trail bike marks a huge step forward, offering a true advantage in all-round trail performance. It starts with a full composite frame that’s fitted with our most up-to-date Maestro suspension. The Advanced Forged composite rocker arm and trunnion-mount shock help produce 115mm of smooth rear-wheel travel that’s active and sensitive to small bumps, giving you killer traction and confident control. And the frame geometry is updated with progressive headtube and seattube angles, shorter chainstays and a longer toptube—all engineered to balance the speed and control of its 29-inch wheels with the quickness and agility you need to rail corners, hammer through rock gardens and do it all with confidence and control. KEY PERFORMANCE FACTORS 29er confidence and control - Larger 29-inch diameter wheels roll over rough terrain with balance and stability, giving you the momentum to tackle technical climbs and the confidence to fly on fast, rugged singletrack descents. Latest suspension tech - Updated Maestro rear suspension features a trunnion mount shock with a longer stroke and smoother feel. With 115mm of full rear-wheel travel (and 130mm up front), it has the new Advanced Forged Composite upper rocker arm for increased stiffness and strength plus lower overall frame weight. Trail-tuned chassis - The lightweight Advanced-grade composite frameset features updated geometry, including an aggressive 66.5-degree headtube angle and 74.5-degree seattube angle, plus a 44mm fork offset. The result is agile and efficient climbing capabilities plus added control for high-speed descents.
Giant Trance 29 2
$2,900.00
Be your best on the most challenging trails. Climb technical steeps and rail descents with confidence and speed. This short-travel 29er trail bike features reengineered rear suspension and progressive geometry to help you up your game. This super-versatile trail machine is built on an updated ALUXX SL frameset that blends our latest Maestro suspension technology with progressive, trail-oriented geometry. To soak up every bump, from big rocks to small undulations, we gave it a trunnion-mount shock and an Advanced Forged Composite upper rocker arm. This combination produces 115mm of smooth, active rear-wheel travel that puts you in control. Up front, it features a 130mm travel suspension fork, and the overall geometry has been tuned and developed to maximize its performance on rugged trails. 29er confidence and control Larger 29-inch diameter wheels roll over rugged terrain with balance and stability, giving you the momentum to tackle technical climbs and the confidence to fly on fast, rugged singletrack descents. Latest suspension tech Updated Maestro rear suspension features a trunnion-mount shock with a longer stroke and smoother feel. With 115mm of full rear travel (and 130mm up front), it has the new Advanced Forged Composite upper rocker arm for increased stiffness and strength plus lower overall frame weight. Trail-tuned chassis The lightweight and durable ALUXX SL aluminum frameset features updated geometry, including an aggressive 66.5-degree headtube angle and 74.5-degree seattube angle, plus a 44mm fork offset. The result is agile and efficient climbing capabilities plus added control for high-speed descents.
Giant Reign SX
$2,700.00
From the bike park to enduro tracks to steep singletrack shredding, this all-mountain bruiser has swagger to spare. The lightweight, super-stiff aluminum frame is long and low, and its Maestro suspension helps you float through the rough stuff. This amped up version of the Reign enduro and all-mountain machine is made for riders who gravitate toward steep, rough and aggressive descents. It offers a longer travel 170mm fork and robust components that make it suitable for unforgiving terrain. The super strong and stiff ALUXX SL aluminum frame features updated geometry with a longer cockpit that’s designed to optimize its 27.5 wheels. The trunnion-mount Maestro rear suspension system offers 160mm of smooth, active travel and is bolstered by the new Advanced Forged Composite upper rocker arm, which is lighter and stronger than the previous aluminum design. If hammering through rock gardens and flying down steep descents is your idea of the perfect ride, then Reign SX is the machine for you. KEY PERFORMANCE FACTORS 27.5 agility and control - 27.5-inch wheels balance agility and control, giving you the ability to roll over rugged terrain, flick the bike at speed, change lines, and explode out of corners. Latest suspension tech - Updated Maestro rear suspension features a trunnion mount shock with a longer stroke and smoother feel. With 160mm of travel (and 170mm up front), it has the new Advanced Forged Composite upper rocker arm for increased stiffness and strength plus lower overall frame weight. Enduro geometry - The lightweight and stiff Advanced-grade composite frameset features updated enduro-style geometry, so you can ride aggressive descents and rail corners with confidence.
Giant Stance
$1,800.00
Built with a lightweight ALUXX aluminum frameset and FlexPoint single-pivot rear suspension setup, Stance is a great way to improve your trail riding. Its 27.5+ wheel and tire compatibility give it a plush ride quality that soaks up bumps and adds more traction and stability. Combined with 120mm of smooth suspension travel front and rear, it's a confident ride that will have you nailing new lines.
Giant Stance 1
$1,800.00
Take to the trail with a new level of confidence. Packing the perfect combination of grippy, rock-eating, plus-sized tires and smooth-riding suspension, Stance gives you more traction, more control and more fun. Built with a lightweight ALUXX aluminum frameset and our innovative FlexPoint rear suspension, Stance is the perfect way to improve your trail-riding game. Its 27.5+ wheel and tire compatibility gives it a plush ride quality that soaks up bumps and adds more traction and stability. Combined with 120mm of smooth suspension travel front and rear, it’s a confident ride that will have you nailing new lines. KEY PERFORMANCE FACTORS Plus-sized compatible -27.5+ wheel and tire compatibility gives you added confidence and control on the trail. Proven suspension setup - FlexPoint rear suspension offers 120mm of travel (plus 130mm fork up front) for smooth-riding confidence on climbs and descents. High-quality aluminum frame - The lightweight, stiff and durable ALUXX aluminum is hand-built and engineered in-house by the world leader in alloy bicycle technology.
Giant Stance 29 1
$1,800.00
Float through rock gardens. Feel the flow on technical singletrack. This all-new full-suspension 29er makes it easier than ever to own the latest trail-taming technologies. Own Stance 29, and you’ll own the trail. Modern mountain bike trails are fun, flowy and challenging. The new Stance 29 gets you in sync with the terrain, so you can ride with confidence and have more fun. With its proven ALUXX aluminum frame and our FlexPoint rear suspension system, it offers a smooth, balanced ride that keeps you in control. The frame geometry is optimized for 29-inch wheels, giving you stability on tricky descents and greater traction and speed on all types of terrain. With 120mm of smooth suspension travel in the rear and 130mm up front, it’s the perfect entry to singletrack fun. KEY PERFORMANCE FACTORS Attainable trail performance - Handcrafted with lightweight, stiff and durable ALUXX aluminum, it’s the perfect entry to full-suspension performance. Smooth suspension - Updated FlexPoint Suspension technology helps you tackle challenging terrain and improve your trail riding capabilities. 29er confidence and control - Larger 29-inch diameter wheels roll over rugged terrain with balance and stability, giving you the momentum to tackle technical climbs and the confidence to fly on fast, rugged singletrack descents.
Giant Fathom 2
$1,200.00
Get your dose of singletrack with more confidence and control. The combination of a lightweight hardtail frame, 120mm suspension fork, and 27.5" wheels with wide rims and cushy, high-volume tires delivers loads of traction, speed, and fun on the trail. With its lightweight ALUXX SL aluminum frame, 27.5" wheels, and high-volume tires, the new Fathom is a great choice for technical terrain and singletrack shredding. It blends the efficient ride quality of a classic hardtail with the confident ride quality of larger tires that absorb bumps and give you more traction—so you can tackle rougher trails with total control. The new frame is designed with trail-friendly geometry that includes a more relaxed head angle made for a 120mm suspension fork. Proven alloy performance - ALUXX SL aluminum frameset is hand-built in-house by the world leader in aluminum engineering. Balance and stability - Frame geometry is designed to optimize the confident, stable handling of 27.5 wheels with plush high-volume tires—ideal for rugged, adventurous terrain. Trail tuned - More relaxed frame geometry (compared to XC) and control-focused components deliver added control for trail riding conditions.
Giant Talon 2
$750.00
PUSH THE PACE ON CLIMBS, LET LOOSE ON THE DESCENTS. THIS ALUMINUM HARDTAIL GIVES YOU A FEEL FOR THE TRAIL WITH BALANCED, CONFIDENT HANDLING AND A PLUSH SUSPENSION FORK. KEY PERFORMANCE FACTORS Proven alloy performance ALUXX aluminum frameset is hand-built in-house by the world leader in aluminum engineering. Balance and stability Frame geometry is designed to optimize the balance and roll-over capabilities of 29-inch wheels or the liveliness of 27.5-inch wheels (depending on frame size). XC control Suspension fork offers either 80mm or 100mm of smooth travel for added XC control. Wheel size: Sizes X-Small – Medium: 27.5-inch Sizes Small – X-Large: 29-inch
Giant XtC Jr 26+
$575.00
There’s no better way to get young riders motivated than to give them the proper tools for adventure. With a lightweight frame, perfectly sized wheels, and all the latest mountain bike technologies, XtC Jr. 26+ gets them ready to roll. The XtC Jr. 26+ is built on a lightweight ALUXX aluminum frame with a low stand-over height and geometry designed for smaller bodies. Its specially sized 26-inch wheels come with extra-wide 2.8-inch tires, which add comfort and traction to help boost the confidence of young riders. The soft, cushy tires can be ridden with lower air pressure, giving the bike a smooth ride on rocky, bumpy trails. It also features a lightweight, easy-to-use 1x9 drivetrain, powerful disc brakes, and youth-sized components for added comfort and control. Lightweight frame ALUXX-grade aluminum frame provides a lightweight, purpose-built chassis for aspiring young off-road riders. Confidence and control 26-inch wheels and high-volume “Plus” size tires create a cushioned off-road ride quality for added control and confidence. Kid-friendly features Youth-specific performance components help young riders improve their off-road skills.
Giant ATX
$530.00
From parkways to paths and everything in between, this versatile bike can add some spice to your commute or fitness routine. With its flat handlebar, upright positioning, and suspension fork, you’re free to ride different types of terrain with confidence and control. With a rugged personality and a smooth riding style, ATX features the familiar flat handlebar look of a traditional mountain bike. It has a lightweight yet durable ALUXX aluminum frame and a suspension fork with 100mm of smooth travel to soak up bumps. The wheel diameter varies based on bike size, with 26-inch wheels on smaller frames and 27.5 on larger ones. This tailors the bike’s handling to a rider’s height. Powerful brakes deliver confident handling in all types of weather, and integrated mounts make it easy to add racks or fenders to suit your riding adventures. All-terrain versatility With a mountain bike-style flat handlebar and suspension fork, you can ride road or dirt with confidence. Lightweight and durable Frameset constructed with high-quality ALUXX aluminum. Comfort and stability Frame geometry puts the rider in a position that balances efficiency with stability on rough roads, paths, or trails.
Giant ATX 3
$430.00
From parkways to paths and everything in between, this versatile bike can add some spice to your commute or fitness routine. With its flat handlebar, upright positioning and suspension fork, it’s cool and capable on-road or off-road. With a rugged personality and a smooth riding style, ATX features the familiar flat-handlebar look of a traditional mountain bike. It has a lightweight yet durable ALUXX aluminum frame and a suspension fork with 100mm of smooth travel to soak up bumps. The wheel diameter varies based on bike size, with 26-inch wheels on smaller frames and 27.5 on larger ones. This tailors the bike’s handling to a rider’s height. Powerful brakes deliver confident handling in all types of weather, and integrated mounts make it easy to add racks or fenders to suit your riding adventures. KEY PERFORMANCE FACTORS All-terrain versatility - With a mountain bike style flat handlebar, and suspension fork, you can ride road or dirt with confidence. Lightweight and durable - Frameset constructed with high-quality ALUXX aluminum. Comfort and stability - Frame geometry puts the rider in a position that balances efficiency with stability on rough roads, paths or trails.
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