Team Tamarack Mountain Bike Racing World Resouces

mountain bike gears pop….?

Every time i have to go up hill and i get up off the seat to pedal harder the chain just pops out of its place and i end up fallin on the seat. why does this happen i checked the chain and there is nothing wrong with it. i never cross the chain when changeing gears either. i have a GT Timberline please heeeelp

If it switching gears you need a derailleur adjustment. If it jumping the sprocket you may have a worn chain and gears.

http://bicycletutor.com/adjust-rear-derailleur/

2008 GT timberline Sport Bike review

2010 GT Avalanche 1.0 Disc Mountain Bike $599.99 2010 GT Avalanche 1.0 Disc Mountain Bike. The low-level price on this mid-level hardtail mountain bike will sweep you off your feet. With a legendary GT Triple Triangle designed aluminum frame, Rock Shox front suspension and Shimano components, this ride will challenge you to reach new heights.

2010 GT Avalanche 2.0 Disc Mountain Bike $449.99 2010 GT Avalanche 2.0 Disc Mountain Bike. This mid-level hardtail mountain bike will keep you in front of all chasers. The GT Avalanche 2.0 features a NEW hydroformed and butted 6061 Triple Triangle aluminum frame, Suntour hydraulic suspension with lockout, and Shimano components.

2010 GT Sensor 1.0 Mountain Bike $2299 2010 GT Sensor 1.0 Mountain Bike. New for 2010, the GT Sensor 1.0 is a top-end, 120mm travel bike that’s ready to handle anything you point it at. If your yen for speed doesn’t diminish when the trail goes all gnarly, nasty or scary steep, the Sensor 1.0 deserves serious consideration.

2009 GT Sanction 3.0 Trail Mountain Bike $1149 2009 GT Sanction 3.0 Trail Mountain Bike. Designed to exceed the high standards of today’s most aggressive enthusiasts and freeriders, the Sanction 3.0 is engineered with a full monocoque frame, dual suspension and GT’s race-proven Independent Drivetrain – everything you need to take you AND the sport of mountain biking in a whole new direction!

2011 GT Laguna Women’s Mountain Bike $299.99 2011 GT Laguna Women’s Mountain Bike. Chances are, if you try mountain biking you could very well end up hooked on the sport. That’s why it pays to make your first mountain bike one that will last you for awhile. For no more than what you’d pay at a discount store for a cheaply made bike, you can own a quality GT Laguna mountain bike that’s specifically made to fit a woman. This lightweight aluminum bike may not cost a lot, but GT has packed it with features that even experienced mountain bikers would appreciate. Like a Suntour suspension fork with 63mm travel, 21-speed drivetrain, Shimano Rapid Fire shifters, and a comfortable, women’s-specific saddle with waterproof cover. It’s all you need to get started (besides a Bicycle Helmet and maybe gloves, of course) so get ready to find out for yourself why mountain biking is so popular.

2010 GT Sensor 2.0 Mountain Bike $1799 2010 GT Sensor 2.0 Mountain Bike. New for 2010, the GT Sensor 2.0 is a 120mm travel bike that’s ready to handle anything you point it at. If your yen for speed doesn’t diminish when the trail goes all gnarly, nasty or scary steep, the Sensor 2.0 full-suspension mountain bike deserves your serious consideration.

2011 GT Aggressor 3.0 Mountain Bike $299.99 2011 GT Aggressor 3.0 Mountain Bike. Get your first taste of trail riding on a quality-built bike you can depend on. The GT Aggressor 3.0 may be priced like one of those heavy rigs from a big box store, but there’s nothing cheap or boxy about it. You get GT’s legendary lightweight Triple Triangle aluminum frame, suspension fork with 63mm travel, Shimano drivetrain with RapidFire shifters and sturdy Alex aluminum rims with GT alloy hubs. It’s a great bike at a great price, and all you need for your first great trail ride — and a lot more after that.

2012 GT Avalanche 3.0 Mountain Bike $469.99 2012 GT Avalanche 3.0 Mountain Bike. A full-featured hardtail mountain bike that’s an avalanche of fun. The GT Avalanche 3.0 packs many of the performance features found on bikes costing a lot more, including a lightweight aluminum frame, suspension fork with lockout, efficient 24-speed Shimano drivetrain, and powerful disc brakes. Whether you’re climbing, descending or enjoying the flow on the flats, the Avalanche 3.0 will sweep you away with its unstoppable combination of features, performance and value.

2011 GT Avalanche 3.0 Disc Mountain Bike $399.99 2011 GT Avalanche 3.0 Disc Mountain Bike. An entry-level hardtail mountain bike that’s an avalanche of fun. The GT Avalanche 3.0 Disc packs many of the performance features of bikes far above its class, including a lightweight aluminum frame, suspension fork with lockout, efficient Shimano drivetrain, and powerful disc brakes. Whether you’re going up, down, or taking in the views on the flats, the Avalanche 3.0 will sweep you away with its unstoppable combination of features, performance and value.

2010 GT Force 3.0 Mountain Bike $1199 2010 GT Force 3.0 Mountain Bike. A full suspension mountain bike for the whole mountain… including those parts you never thought were ride-able. The Force 3.0 inherits the best aspects of downhill bikes, and adds mountain goat-like climbing finesse. The 150mm travel Fox Float R Shock and Shimano Deore components ensure a smooth, dependable and super fun ride.

2011 GT Force 2.0 Mountain Bike $1799.99 2011 GT Force 2.0 Mountain Bike. GT’s hit one out of the park again. They’ve taken the popular Force 2.0 mountain bike and made it even better for 2011 by equipping it with a SRAM X7 2×10 drivetrain, RockShox Sektor TK Solo Air fork and Avid Elixir 5 disc brakes. The lighter, faster and more responsive all-mountain Force 2.0 is equipped to take you up, down and all around the mountain with confidence-inspiring control that will help you go farther and faster than you’ve ever gone before.

2012 GT Aggressor 3.0 Mountain Bike $299.99 2012 GT Aggressor 3.0 Mountain Bike. Get your first taste of trail riding on a quality-built bike you can depend on. The GT Aggressor 3.0 may be priced like one of those heavy rigs from a big box store, but there’s nothing cheap or boxy about it. You get GT’s legendary lightweight Triple Triangle aluminum frame, suspension fork with 63mm travel, Shimano drivetrain with RapidFire shifters and sturdy Alex aluminum rims with alloy hubs. It’s a great bike at a great price, and all you need for your first great trail ride — and a whole lot more after that.

2011 GT Sensor 2.0 Mountain Bike $1799.99 2011 GT Sensor 2.0 Mountain Bike. It’s everything you love about your cross country race bike — its responsiveness, efficiency and agility — expressed in a more trail-worthy version with additional travel, a slacker geometry and beefier build. It lets you climb comfortably and descend faster and more confidently than ever before. The 2011 GT Sensor 2.0 mountain bike features a hydroformed aluminum frame, Rock Shox Recon Gold fork with 120mm travel, Fox Float RL rear shock and efficient Shimano/SRAM drivetrain.

2011 GT Avalanche 2.0 Disc Mountain Bike $599.99 2011 GT Avalanche 2.0 Disc Mountain Bike. The GT Avalanche 2.0 may be a mid-level mountain bike, but considering how this bike rails, you won’t have to worry about being stuck in the middle of the pack. The triple triangle aluminum frame is lightweight and responsive, the 100mm travel fork soaks up bumps to help keep you in control, and the 27-speed Shimano drivetrain gives you all the gears you need to get up to speed and maintain your momentum over all kinds of terrain. And when you need to slow things down, you’ll appreciate the reliable performance of the powerful Tektro Hydraulic disc brakes.

2011 GT Karakoram 3.0 Mountain Bike $499.99 2011 GT Karakoram 3.0 Mountain Bike. Introduced in 1988, the GT Karakoram mountain bike faded from view in 1993. Back then, the popular hardtail sported 26 wheels. Resurrecting the historic marque for 2011, GT has equipped the latest iteration of the Karakoram with trail-taming 29 wheels. The legendary GT Triple Triangle 6061 aluminum frame with hydroformed top tube and downtube also features an SR Suntour suspension fork with 100mm travel, Shimano Suntour drivetrain, Tektro linear pull brakes and 29 Alex rims fitted with Kenda Nevegal tires, making the 2011 Karakoram 2.0 29er an even more capable and fun-to-ride trail bike than the legendary original.

2010 GT Avalanche 3.0 V-Brake Mountain Bike $399 2010 GT Avalanche 3.0 V-Brake Mountain Bike. The GT Avalanche 3.0 V-Brake Mountain Bike is for recreational riders looking for an entry-level hardtail. Whether you spend time on twisty singletrack or hardpack bike paths, the Avalanche 3.0 packs plenty of performance features.

2010 GT Marathon Carbon Pro Mountain Bike $3499 2010 GT Marathon Carbon Pro Mountain Bike. Think full suspension and full-out XC performance are as incompatible as ice cream and ketchup? The folks who bring you the GT Marathon Carbon Pro beg to differ. Light, responsive, and incredibly well-mannered at speed, it’s a full-on XC race bike to its core–but with a trail-taming demeanor that no hardtail can match.

2011 GT Avalanche 2.0 Mechanical Disc Mountain Bike $818 2011 GT Avalanche 2.0 Mechanical Disc Mountain Bike. If you’re looking for a mid-level hardtail mountain bike that does it all, check out the ready-to-roll, GT Avalanche 2.0 mechanical disc mountain bike. With its lightweight, durable aluminum frame, Suntour suspension fork with 100mm travel, Tektro Novela mechanical disk brakes and Shimano components, the 27-speed GT Avalanche 2.0 delivers a fun, responsive and comfortable ride on the trail, bike path or pavement.

2011 GT Avalanche 1.0 Disc Mountain Bike-Exclusive $749.99 2011 GT Avalanche 1.0 Disc Mountain Bike-Exclusive. Brace yourself, because the low-level price on this mid-level GT hardtail mountain bike will sweep you off your feet. With a legendary GT Triple Triangle-design aluminum frame, bump-eating, Rock Shox front suspension and Shimano drivetrain and disc brakes, the GT Avalanche 1.0 is ready for whatever the trail or mountain throws at you.

2010 GT Zaskar Carbon Team Mountain Bike $3999 2010 GT Zaskar Carbon Team Mountain Bike. You got your first speeding ticket before you turned 16. It’s never light enough or fast enough to you. You barrel down mountainsides and rip through corners at speeds that would scare your mother. Prepare to be grounded. The all-new GT Zaskar Carbon Team is the ultimate hardtail race bike. A gorgeous Fox 32 RL fork, Ritchey WCS carbon components, and Mavic Crossmax SLR wheels are pinned to GT’s superlight full monocoque force optimized carbon frame with Shimano’s coveted XTR drivetrain. The fast rolling Team is dipped head to toe in technology and innovation. Press on, the Zaskar Carbon Team can take whatever punishment you can stomach.

2012 GT Aggressor 24" Kid’s Mountain Bike $349.99 2012 GT Aggressor 24 Kid’s Mountain Bike. Just like GT’s full-size Aggressor mountain bike, but sized for younger riders, the 24 Aggressor is an ideal bike for the kid who wants to tackle off-road riding. It has a lightweight aluminum frame with low standover, Suntour suspension fork with 50mm travel, 21-speed drivetrain, Twist shifters and linear-pull brakes. Outfitted with GT All Terrain tires, the Aggressor is ready to roll just about anywhere.

2010 GT Sanction 2.0 Mountain Bike $1699 2010 GT Sanction 2.0 Mountain Bike. Never look back. Yesterday is gone, tomorrow is not promised, but you have this moment. Seize it. The Sanction 2.0, an advanced all-mountain design, with optimized tube construction, was meant to be ridden down the mountain with ultimate speed and confidence. Adapt to every ride and section of the trail with Rock Shox Domain 302 U-Turn featuring up to 160mm of adjustable travel. The SRAM/Shimano race-level shifting componentry provide all-day performance and the Avid Elixir 5 hydraulic disc brakeset puts powerful stopping power and modulation at your fingertips. GT has created a stiff, strong ride that dares you to push yourself to the limit. Breath deep, clip in, and never look back.

2011 GT Scamp 20" Girl’s Mountain Bike $269.99 2011 GT Scamp 20 Girl’s Mountain Bike. The GT Scamp 20 girl’s mountain bike is designed for pre-teens eager for their first mountain bike ride. It features a sturdy aluminum frame and suspension fork that will accelerate a novice rider’s learning curve and a killer graphics package that will make your young rider the envy of her friends.

2011 GT Avalanche 2.0 Disc Women’s Mountain Bike — U.S. Exclusive $599.99 2011 GT Avalanche 2.0 Disc Women’s Mountain Bike — U.S. Exclusive. Tackle more challenging trails with this aggressive women’s hardtail mountain bike. The GT Avalanche 2.0 hydraulic disc women’s mountain bike has plush front suspension, Shimano components, 27-speed gearing, efficient disc brakes and a comfortable women’s-specific fit that will help you take on tough terrain with a lot more confidence and greater control.

2012 GT Aggressor 3.0 Mountain Bike — U.S. Exclusive $349.99 2012 GT Aggressor 3.0 Mountain Bike — U.S. Exclusive. Get your first taste of trail riding on a quality-built bike you can depend on. The GT Aggressor 3.0 has GT’s legendary lightweight Triple Triangle aluminum frame, a front suspension fork with 63mm travel, Shimano drivetrain with RapidFire shifters and sturdy Alex aluminum rims with alloy hubs. It’s a great bike at a great price, and all you need for your first great trail ride!

2012 GT Aggressor 20" Kid’s Mountain Bike $309.99 2012 GT Aggressor 20 Kid’s Mountain Bike. The Aggressor 20 mountain bike is modeled on GT’s full-size Aggressor, but it’s scaled to fit younger riders. It has a lightweight aluminum frame with low standover, Suntour suspension fork with 50mm travel, 7-speed drivetrain, Twist shifters and linear-pull brakes. Outfitted with GT All Terrain tires, the Aggressor is perfect for the trail or the neighborhood.

2011 GT Scamp 24" Girl’s Mountain Bike $299.99 2011 GT Scamp 24 Girl’s Mountain Bike. A girl’s gotta do what a girl’s gotta do. And if that includes hitting the trails with Mom and Dad, then the GT Scamp 24 mountain bike is the perfect bike for getting started. Except for the smaller, 24 wheels, the Scamp has all of the features found on adult mountain bikes, including a lightweight alloy frame, trail-taming suspension fork and an easy-shifting 21-speed drivetrain. It’s everything the budding young mountain biker needs to begin developing confidence and honing her trail riding skills.

2011 GT Sensor 3.0 Mountain Bike – U.S. Exclusive $1299.99 2011 GT Sensor 3.0 Mountain Bike – U.S. Exclusive. GT calls the Sensor 3.0 the ultimate trail-bike. Combining the responsiveness and agility of a lightweight cross-country race bike with a more relaxed geometry and beefed-up travel, the Sensor 3.0 is a spirited climber that inspires confidence on the descents. With its hydroformed aluminum frame, 120mm-travel RockShox Recon fork and Shimano Deore drivetrain, the full-suspension Sensor 3.0 will help you earn your wings no matter which way the trail turns.

2010 GT Avalanche 2.0 Mechanical Disc Mountain Bike $499 2010 GT Avalanche 2.0 Mechanical Disc Mountain Bike. You can look high and low, but you won’t find a more capable mid-level hardtail than the GT Avalanche 2.0 mountain bike. The lightweight, durable aluminum frame, Suntour front suspension with 100mm travel, Tektro Aquila mechanical disk brakes and Shimano components make the Avalanche 2.0 a trail-ready ride right out of the box.

2011 GT Karakoram 2.0 29" Mountain Bike $749.99 2011 GT Karakoram 2.0 29 Mountain Bike. Introduced in 1988, the GT Karakoram mountain bike faded from view in 1993. Back then, the popular hardtail sported 26 wheels. Resurrecting the historic marque for 2011, GT has equipped the latest iteration of the Karakoram with trail-taming 29 wheels. The legendary GT Triple Triangle 6061 aluminum frame with hydroformed top tube and downtube also features a Rock Shox Dart 3 suspension fork, Shimano Alivio/FSA drivetrain, Tektro disc brakes and 29 Alex rims fitted with Kenda Nevegal tires, making the 2011 Karakoram 2.0 29er an even more capable and fun-to-ride trail bike than the original.

2012 GT Laguna 20" Kid’s Bike $289.99 2012 GT Laguna 20 Kid’s Bike. With its lightweight aluminum frame, easy-to-use 7-speed twist shifters and powerful linear-pull brakes, the GT Laguna is an ideal bike for the beginning mountain biker or young rider who’s ready to move up to a mid-size, multi-geared model.

2011 GT Avalanche 1.0 Disc Women’s Mountain Bike $649.99 2011 GT Avalanche 1.0 Disc Women’s Mountain Bike. The low-level price on this well-spec’d, mid-level women’s hardtail mountain bike will knock you off your feet. The Avalanche 1.0 brings together the legendary GTw Triple Triangle aluminum frame, a Rock Shox suspension fork and quality Shimano components in a responsive, solid-handling package. Precisely attuned to the unique needs of the female rider with its micro-adjustable seatpost, women’s-specific saddle and anatomic grips, it’s a dialed-in ride that will let you sweep down the mountain in complete control.

GT ZuM Commuter Bike – Performance Exclusive $349.99 GT ZuM Commuter Bike – Performance Exclusive. Get the speed of a road bike with the strength and versatility of an Mountain Bike. How? With GT’s legendary Triple Triangle Design , tough 8-speed drivetrain, low standover height, responsive handling and the unique ability to turn this comfortable cruiser into a dirt-worthy machine…just by swapping out the tires. Done and done.

2011 GT Traffic 3.0 Women’s Commuter Bike $449 2011 GT Traffic 3.0 Women’s Commuter Bike. Want a women’s-specific commuter bike strong enough to stand up to the toughest urban challenges? Check out the Traffic 3.0. Drawing on their long heritage of designing super-rugged BMX and mountain bikes, GT engineered the Traffic to tackle anything the city throws at it. From its 7000 Series aluminum frame and robust rigid fork, eyelets for fenders or racks and integrated saddle light, to its smooth-shifting 24-speed drivetrain with Shimano shifters and derailleurs, the Traffic goes the extra mile when it comes to features and performance.

2010 GTw Avalanche Expert Women’s Mountain Bike – U.S. Exclusive $749 2010 GTw Avalanche Expert Women’s Mountain Bike – U.S. Exclusive. A women’s higher-end hardtail that’s an avalanche of fun. Start with a women’s-specific aluminum frame, with GT Triple Triangle design. Add a Rock Shox suspension fork, full Shimano SLX drivetrain and Avid disc brakes, and you’ve got a nimble, efficient machine. Twist through singletrack, scale dirt roads or even toe the start line at a local race.