Color(s): Chi Red Nude Carbon
MSRP $3,629.99*
6066 hydroformed butted aluminum mainframe & chainstays, co-molded carbon seatstays, cold-forged dropouts, G2 29" Geometry
WheelsBontrager Rhythm Elite Disc 29, 28mm wide tubeless ready* rims
Shimano XT front derailleur, Shimano XT rear derailleur, Shimano XT shifters, Shimano M770 XT crank, Avid Elixir R hydraulic disc brakes
SuspensionCustom Fox F100RLC 29, 100mm travel, custom G2 offset; Fox Float RP23, Pro Pedal
| Frameset | |
|---|---|
| Sizes | SM (16") | MD (17.5") | LG (19") | XL (21") |
| Frame | 6066 hydroformed butted aluminum mainframe & chainstays, co-molded carbon seatstays, cold-forged dropouts, G2 29" Geometry |
| Fork | Custom Fox F100RLC 29, 100mm travel, custom G2 Geometry 51mm offset crown, air spring, 4-position external platform adjustment, external rebound adjustment |
| Rear Shock | Custom Tuned Fox Float RP23 w/air pressure, 3-Position Pro Pedal, external Rebound adjust 7.5x 2" |
| Drivetrain | |
| Shifters | Shimano XT M770, Rapidfire Plus |
| Front Derailleur | Shimano XT M771, down swing |
| Rear Derailleur | Shimano XT M772 Shadow SGS |
| Cassette | SRAM PG970 11-34T, 9spd |
| Wheels | |
|---|---|
| Wheels | Bontrager Rhythm Elite Disc 29, 28mm wide tubeless ready* rims |
| Tires | Bontrager XDX, 29x2.1 (53/51), tubeless ready, abrasion resistant, 120 TPI, aramid folding bead |
| Components | |
| Crank Set | Shimano XT, 44/32/22, Hollowtech II arms, integrated BB spindle |
| Saddle | Bontrager Race Lite, superlight hollow cromoly rails |
| Seatpost | Bontrager Race Lite, 2014 aluminum shaft, infinite adjust Bontrager head, 20mm Offset, |
| Handlebar | Bontrager Race Lite Big Sweep, 640mm width, 12d sweep, 31.8mm |
| Stem | Bontrager Race X Lite OS, 7d rise, 31.8mm |
| Headset | Cane Creek ZS3, semi-integrated, cartridge bearings, short top cap |
| Brakeset | Avid Elixir R, hydraulic disc, integrated reservoir w/tools-free reach adjust, 185mm front/160mm rear G2 Clean Sweep 6-bolt rotors |
| Frame Size | SM (16") | MD (17.5") | LG (19") | XL (21") |
|---|---|---|---|---|
| Standover (mm) | 752.00 | 754.00 | 748.00 | 752.00 |
| Effective top tube (mm) | 565.40 | 597.20 | 617.20 | 637.60 |
| Cockpit length (mm) | 640.40 | 687.00 | 722.00 | 742.60 |
| Minimum cockpit (mm) | 625.40 | 672.00 | 707.00 | 727.60 |
| Maximum cockpit (mm) | 655.40 | 702.00 | 737.00 | 757.60 |
| Stem length (mm) | 75.00 | 90.00 | 105.00 | 105.00 |
| Crank length (mm) | 170.00 | 175.00 | 175.00 | 175.00 |
| Headtube length (mm) | 105.00 | 115.00 | 125.00 | 135.00 |
| Head angle (deg) | 71.00 | 71.00 | 71.00 | 71.00 |
| Head angle sagged (deg) | 69.90 | 69.90 | 70.00 | 70.00 |
| Trail (mm) | 71.70 | 71.70 | 71.70 | 71.70 |
| Trail Sagged (mm) | 79.30 | 79.00 | 78.90 | 78.80 |
| Seat Tube Angle (deg) | 73.60 | 73.60 | 73.60 | 73.60 |
| Seat Tube Angle Sagged (deg) | 72.50 | 72.50 | 72.50 | 72.60 |
| Effective Chainstay Length (mm) | 462.10 | 462.10 | 462.10 | 462.10 |
| Bottom bracket height (mm) | 320.00 | 320.00 | 320.00 | 320.00 |
| Bottom bracket height sagged (mm) | 298.30 | 298.10 | 297.90 | 297.80 |
| Bottom bracket drop (mm) | 45.00 | 45.00 | 45.00 | 45.00 |
| Wheelbase (mm) | 1094.00 | 1126.20 | 1146.70 | 1167.60 |
Another Angle on 29ers
Imagine a skateboard wheel running over a series of 1" bumps. Since the
skateboard wheel has a radius of only an inch, the wheel has to move 1"
vertically in just 1" of horizontal motion every time it contacts a
bump. This is an abrupt change, or high angle of attack has drastic
effects on the rider's motion. With a 20" BMX wheel, that same 1" of
vertical motion happens over about 4" of forward motion. This turns
what was a radical bump into a mild annoyance. Now ride over the bump
on a 26" wheel, and you have almost 6" of horizontal distance to spread
out the impact. The bump is hardly noticeable. Not only does the bump
disturb your riding less, but it also has less effect on your speed.
Bigger wheels maintain your momentum. This effect is somewhat similar
to that of a suspension fork, except that it happens on all bumps,
regardless of suspension fork tuning. Tire pressure changes the effect
somewhat, but with the same results regardless of tire size. Since
riding off road is normally on less than smooth surfaces, the effect of
a larger wheel is constantly enhancing the ride. If both wheels are
larger, the effect works on both ends of the bike. On the Fisher 29ers,
you'll notice this effect in two ways. First, the bike will ride
smoother and more comfortably. Second, the bike will be slightly
faster, especially on broken or rough ground.
Bigger Wheels Have a Longer Contact Patch
The contact patch is the amount of tire you have on the ground at any one time as the wheels goes through its rotation. As The diameter of the wheel increases from 26" to 29", the shape of the contact patch gets longer. The benefits of this are noticeable. For technical climbs, the added length increases traction as the rider can shift their weight more freely without losing pressure on the contact patch. In addition, the increased contact patch length on a 29er benefits the rider when cornering in uneven terrain as the tire will want to stay in contact with an obstacle and not skip over it. Last, in mud, sand or snow, the longer contact patch can help keep the tire on top of the surface as opposed to sinking in and bogging down. Think about snowshoes. They are designed to keep you on top of the snow, where the going is easy.
Inertia helps explain the difference in handling between a 26" wheel and a 29" wheel. Understanding how inertia affects the larger wheel helped the Fisher team determine how to normalize the behavior of a 29er to that of a G2 26" bike.
Input at Steering
A more dramatic effect of inertia on 29ers is the effect on handling. 29ers have a reputation for steering slowly. The torque required to steer a 29er is 30% greater than that of a 26" bike due to the greater inertia of the bigger wheel.
Fisher has applied the thinking behind Genesis 2 Geometry to overcome this. To overcome the turning inertia Fisher experimented with multiple fork offsets on 29ers.
A crew consisting of Travis Browne, Fisher athletes, and Fisher product developers blind tested several different fork offsets. After several iterations a fork offset of 51mm was settled on as the optimized offset for 29ers. This 51mm offset reduces the trail of a 29er and brings it to nearly the same distance as a 26" bike. The result is a 29er that handles with the same nimbleness of a 26" bike.
The Acceleration Myth
Acceleration is measured by how much force is required to bring the wheel up to speed. There is a small difference between the acceleration of 26" and 29" wheels. However, a mountain bike wheel is little good without the rest of the bike and the much heavier rider on top of it.
Point being, the difference in force required to accelerate a 29er vs a 26" bike needs to take in consideration the total weight of the wheels, bike, and rider. Assuming the same 175lb rider on a bike, the amount of force required to accelerate a 29er vs a 26" bike with the exact same spec is less than 1% difference.
The benefits of the 29" wheel (sustained momentum, better clearance of obstacles, better floatation over soft terrain, improved cornering) outweigh the minimal acceleration force required for a 29er.
Like chocolate and peanut butter, the HiFi platform and the 29" wheel were destined to merge. 29ers are a great choice for all-day riders as shown by their popularity among 24-hour racers. The 26" version of the HiFi was a lightweight, great handling success that was popular among all-day XC trail riders. Combining the two has created the ultimate in full suspension for the 29" world.
It starts with G2 Geometry, the first-ever update to Gary's original Genesis Geometry. In other words, it's the Famous Fisher Feel, fine tuned. G2 uses a custom offset fork to improve the handling characteristics of the bike at slow speeds, while maintaining the stability that Genesis Geometry provides at high speeds. Add in the lightest-weight full-suspension frame in the entire Fisher line, and you have the formula for the next generation of full-suspension trail bikes.
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