Color(s): Metallic Black Nude Carbon
MSRP $2,529.99*
6066 hydroformed butted aluminum mainframe & chainstays, co-molded carbon seatstays, cold-forged dropouts, G2 29" Geometry
WheelsShimano M525 w/M570 (LX) freehub/Bontrager sealed front hub, Bontrager Duster 29" tubeless ready* 28mm wide disc rims, 32h
Shimano Deore front derailleur, SRAM X.7 rear derailleur, SRAM X.7 shifters, Shimano M532-L crank, Avid Juicy 3 hydraulic disc brakes
SuspensionFox F100RL 29, 100mm travel, custom G2 offset; Fox Float RP2, 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 | Fox F100RL 29, 100mm travel, custom G2 Geometry 51mm offset crown, air spring, external rebound & lockout |
| Rear Shock | Custom Tuned Fox Float RP2 w/air pressure, 2-Position Pro Pedal, rebound, 7.5x 2" |
| Drivetrain | |
| Shifters | SRAM X.7, trigger |
| Front Derailleur | Shimano Deore M531 |
| Rear Derailleur | SRAM X.7 |
| Cassette | SRAM PG950 11-34T, 9spd |
| Wheels | |
|---|---|
| Wheels | Shimano M525 w/M570 (LX) freehub/Bontrager sealed front hub, Bontrager Duster 29" tubeless ready* 28mm wide disc rims, 32h |
| Tires | Bontrager XDX, 29x2.1 (53/51), tubeless ready, abrasion resistant, 120 TPI, aramid folding bead |
| Components | |
| Crank Set | Shimano M532-L, 44/32/22, integrated BB spindle |
| Saddle | Bontrager Race |
| Seatpost | Bontrager SSR, micro adjust 20mm offset head |
| Handlebar | Bontrager Race Big Sweep, 620mm width, 12d backsweep, 31.8mm |
| Stem | Bontrager SSR OS, 10d rise, 31.8mm |
| Pedals | Shimano M505 |
| Headset | 1-1/8" threadless, semi-integrated, semi-cartridge bearings |
| Brakeset | Avid Juicy 3, hydraulic disc, w/ 160mm 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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