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Flyer Uproc SL:X E-MTB Light 2024 Review

Flyer Uproc SL:X E-MTB Light 2024 Review

02.05.24 09:04 68Text: NoPain (translated by AI)Photos: FlyerLive from the Riva Bike Festival: The brand new and particularly sporty trail full-suspension with a carbon frame, 130 mm of travel, and the Bosch Performance Line SX motor with 55 Nm.02.05.24 09:04 69

Flyer Uproc SL:X E-MTB Light 2024 Review

02.05.24 09:04 69 NoPain (translated by AI) Flyer
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Live from the Riva Bike Festival: The brand new and particularly sporty trail full-suspension with a carbon frame, 130 mm of travel, and the Bosch Performance Line SX motor with 55 Nm.02.05.24 09:04 69

Just in time for the season opener, the Swiss E-Bike experts present their light and agile E-MTB Uproc SL:X. With its lightweight carbon frame, the new Bosch Performance Line SX motor, and selected components, the trail full-suspension bike weighs just under 18 kilograms and is aimed at everyone who is looking for a sporty E-mountain bike with a natural riding feel.

  • Flyer Uproc SL:X E-MTB Light 2024 Review

The new Bosch SX is a minimal-assist motor that supports up to 55 Nm of torque. It is considered quite quiet and offers a comparatively high peak performance with 450 watts continuous load and a maximum of 600 watts. The technical structure of the SX is the same as the CX, but a third reduction stage was omitted for size and weight reasons. Due to the different primary gearing, the efficiency range shifts upwards and the rider has to maintain a higher pedaling frequency to exploit the full power.
As a result, besides the outer width of the motor housing, the Q-factor also shrank from 178 mm to 160 mm, which comes closer to riding a bio-bike. Nevertheless, the dimensions of the SX remain significantly larger than those of other E-Bike Light motors (Fazua, Bafang, Maxon, and TQ), making an almost invisible integration of the motor system not possible.

  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review

"The Uproc SL:X handles like a mountain bike without a motor, but has the necessary boost for plenty of uphill flow", says Philipp Suter, Head of Product Management at FLYER.

"The Uproc SL:X handles like an 18 kg bio-mountain bike with a low center of gravity", we say, but nonetheless: "The kinematics invite active biking and appeal to sporty riders, switchers, and everyone who doesn't want the motor to do all the work", Suter continues. True.

  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review

The Uproc SL:X runs on 29-inch wheels, features 130 mm of travel, and has an agile geometry for maximum fun on the trail. Additionally, the kinematics can be adjusted via a flip-chip into two positions (High or Low) and the carbon rear construction allows for subtle flex without additional bearings.

The Uproc SL:X is available in four specifications and in the frame color "Cast Silver Gloss" starting from a recommended retail price of 5,799 Euros. The two top models come equipped with the Bosch "PowerMore" battery in a water bottle format and an integrated multi-tool in the stem from the factory. All four bikes incorporate the practical Monkey-Link interface for the front light; the headlight is directly clipped onto the stem and draws power directly from the Bosch battery.

 The SX combines muscle-powered riding excellently with a decent punch. 

My colleague Lukas on the Bosch Performance Line SX. I agree with him!
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 Review

Tech Specs Flyer Uproc SL:X 9.50

Frame Carbon, internal cable routing, supported 1-Link suspension with Flex Pivots, 130 mm travel, 12×148 mm Gearing Sram XX Eagle Transmission, 12-speed, 10-52 t, chain shifting
Sizes S/M/L/XL Wheel Size 29 inches
Motor Bosch Smart System Performance Line SX, 55 Nm Remote Bosch System Controller & Mini Remote
Battery Bosch CompactTube 400 (400 Wh / 11.00 Ah / 36 V) Additional Battery Bosch PowerMore 250 (250 Wh / 6.7 Ah / 36 V)
Fork Fox 34 Float Factory, 130 mm, 15 × 110 mm Damper Fox Float Factory, 210 × 47.5 mm
Brakes Shimano XTR BR-M9120 & BL-M9120 Stem* Satori Ursa, 35 × 35 mm, 0°
Handlebar Hayes ProTaper Carbon, 810 mm, 8°, 25 mm Saddle Fizik Ridon
Seat Post OneUp Components V3, 150 (S / M) / 180 (L) / 210 (XL) mm, 31.6 mm Wheels DT Swiss HXC1501, 30 mm
Tires Schwalbe Wicked Will Super Ground 29 × 2.4 (62 - 622) Lighting Compatible with «MonkeyLink Connect and Recharge»
Weight Inc. battery from 18 kg Price: € 9,999,- RRP

* The cockpit of the model 9.50 is equipped with a practical multi-tool.

  • Flyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review

Photo Gallery Flyer Uproc SL:X 9.50

  • Less (Weight) is More (Riding Fun): The lightweight carbon frame, along with the selected components, allows for a weight of around 18 kilograms.Less (Weight) is More (Riding Fun): The lightweight carbon frame, along with the selected components, allows for a weight of around 18 kilograms.
    Less (Weight) is More (Riding Fun): The lightweight carbon frame, along with the selected components, allows for a weight of around 18 kilograms.
    Less (Weight) is More (Riding Fun): The lightweight carbon frame, along with the selected components, allows for a weight of around 18 kilograms.
  • Protection for high durability: The large chainstay protector, a mud-guard over the main bearing, and factory-applied protective films at critical points ensure that the bike looks like new for a long time.Protection for high durability: The large chainstay protector, a mud-guard over the main bearing, and factory-applied protective films at critical points ensure that the bike looks like new for a long time.
    Protection for high durability: The large chainstay protector, a mud-guard over the main bearing, and factory-applied protective films at critical points ensure that the bike looks like new for a long time.
    Protection for high durability: The large chainstay protector, a mud-guard over the main bearing, and factory-applied protective films at critical points ensure that the bike looks like new for a long time.
  • Flexstays: The special carbon construction of the rear frame allows for optimal flex at the right place even without bearings, reducing both weight and maintenance effort.Flexstays: The special carbon construction of the rear frame allows for optimal flex at the right place even without bearings, reducing both weight and maintenance effort.
    Flexstays: The special carbon construction of the rear frame allows for optimal flex at the right place even without bearings, reducing both weight and maintenance effort.
    Flexstays: The special carbon construction of the rear frame allows for optimal flex at the right place even without bearings, reducing both weight and maintenance effort.
  • Geometry as desired: The suspension setup and geometry can be adjusted to the terrain and riding style via the flip chip.Geometry as desired: The suspension setup and geometry can be adjusted to the terrain and riding style via the flip chip.
    Geometry as desired: The suspension setup and geometry can be adjusted to the terrain and riding style via the flip chip.
    Geometry as desired: The suspension setup and geometry can be adjusted to the terrain and riding style via the flip chip.
  • Extra Power: All Uproc SL:X models can be upgraded with the Bosch "PowerMore 250" battery in a water bottle format. For the models 8.70 and 9.50, it is already included in the delivery.Extra Power: All Uproc SL:X models can be upgraded with the Bosch "PowerMore 250" battery in a water bottle format. For the models 8.70 and 9.50, it is already included in the delivery.
    Extra Power: All Uproc SL:X models can be upgraded with the Bosch "PowerMore 250" battery in a water bottle format. For the models 8.70 and 9.50, it is already included in the delivery.
    Extra Power: All Uproc SL:X models can be upgraded with the Bosch "PowerMore 250" battery in a water bottle format. For the models 8.70 and 9.50, it is already included in the delivery.
  • Multifunctional and tidy: A key feature of the 8.70 and 9.50 models is the cockpit with integrated multitool and a carbon handlebar.Multifunctional and tidy: A key feature of the 8.70 and 9.50 models is the cockpit with integrated multitool and a carbon handlebar.
    Multifunctional and tidy: A key feature of the 8.70 and 9.50 models is the cockpit with integrated multitool and a carbon handlebar.
    Multifunctional and tidy: A key feature of the 8.70 and 9.50 models is the cockpit with integrated multitool and a carbon handlebar.
  • Bosch Smart System Performance Line SX: Up to 600 watts power, with max. 55 Newton meters of torque and an integrated 400 Wh battery. A smart additional battery with 250 Wh support levels is included.Bosch Smart System Performance Line SX: Up to 600 watts power, with max. 55 Newton meters of torque and an integrated 400 Wh battery. A smart additional battery with 250 Wh support levels is included.
    Bosch Smart System Performance Line SX: Up to 600 watts power, with max. 55 Newton meters of torque and an integrated 400 Wh battery. A smart additional battery with 250 Wh support levels is included.
    Bosch Smart System Performance Line SX: Up to 600 watts power, with max. 55 Newton meters of torque and an integrated 400 Wh battery. A smart additional battery with 250 Wh support levels is included.
  • Bosch eBike Flow App: The smartphone app allows you to customize, expand, and keep up to date many features of the drive system, batteries, display, and control unit.Bosch eBike Flow App: The smartphone app allows you to customize, expand, and keep up to date many features of the drive system, batteries, display, and control unit.
    Bosch eBike Flow App: The smartphone app allows you to customize, expand, and keep up to date many features of the drive system, batteries, display, and control unit.
    Bosch eBike Flow App: The smartphone app allows you to customize, expand, and keep up to date many features of the drive system, batteries, display, and control unit.
  • Bosch System Controller: The minimalist control unit with an on/off switch facilitates a quick overview of the riding modes (Eco, Sport, eMTB, or Turbo) and the remaining battery charge.Bosch System Controller: The minimalist control unit with an on/off switch facilitates a quick overview of the riding modes (Eco, Sport, eMTB, or Turbo) and the remaining battery charge.
    Bosch System Controller: The minimalist control unit with an on/off switch facilitates a quick overview of the riding modes (Eco, Sport, eMTB, or Turbo) and the remaining battery charge.
    Bosch System Controller: The minimalist control unit with an on/off switch facilitates a quick overview of the riding modes (Eco, Sport, eMTB, or Turbo) and the remaining battery charge.
  • Flyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 Review

Geometry

Both geometry and kinematics can be adjusted on the Flyer Light E-MTB via flip-chip to suit the riding style and terrain. If necessary, you can switch from the high to the low position in no time, with a flatter steering angle and lower center of gravity.

Additionally, the special carbon layup of the rear frame offers extra flex without complex pivot points in the area of the rear axle.

Geometry Uproc SL:X High Position

Size S
155-165
M
165-175
L
175-185
XL
185-195
Seat tube length (mm) 380 400 440 480
Top tube length (mm) 570 604 628 663
Head tube length (mm) 100 110 120 135
Chainstay length (mm) 451 451 451 451
Steering angle 65.6° 65.6°    65.6°     65.6°
Seat tube angle (effective) 77.9° 77.7°     77.6°  77.4°
Stack (mm) 600 609 618 631
Reach (mm) 440 471 491 521
Bottom bracket drop (mm) 30 30 30 30
Bottom bracket height (mm) 344 344 344 344
Total length (mm) 1945 1979 2004 2040
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review

Geometry Uproc SL:X Low Position

Size S
155-165
M
165-175
L
175-185
XL
185-195
Seat Tube Length (mm) 380 400 440 480
Top Tube Length (mm) 571 605 629 664
Head Tube Length (mm) 100 110 120 135
Chain Stay Length (mm) 453 453 453 453
Head Angle 65.0° 65.0° 65.0° 65.0°
Seat Tube Angle (effective) 77.3° 77.1° 77.0° 76.8°
Stack (mm) 605 614 623 637
Reach (mm) 435 465 485 515
Bottom Bracket Drop (mm) 38 38 38 38
Bottom Bracket Height (mm) 336 336 336 336
Total Length (mm) 1946 1981 2005 2041
  • Flyer Uproc SL:X E-MTB Light 2024 Review

Models and Prices

The new Uproc SL:X is offered in four model specifications in sizes S-XL and in Cast Silver Gloss color ranging from 5,799 to 9,999 Euros.
The entry-level model 4.10 features a Shimano Deore transmission and TRP Slate Evo brakes, and a suspension system consisting of an X Fusion E-Slide 34 RC fork and X Fusion O2 Pro RLX shock. The Bosch CompactTube 400 battery must suffice.
The top model 9.50 opts for the finest parts, such as Sram XX Eagle transmission, Fox Float Factory fork and shock, Shimano XTR brakes, and DT Swiss HXC1501 wheels. As a perk, it includes a multitool hidden in the head tube and the Bosch PowerMore 250 additional battery is automatically included.
In between, with an MSRP of 6,999 Euros, is the Flyer Uproc SL:X 6.50 (Sram GX Eagle transmission, Fox 34 Float Rhythm/Fox Float Performance suspension, DT Swiss H1900) and the Flyer Uproc SL:X 8.70 (Shimano XT, Fox 34 Float Performance, DT Swiss HX1700) with multitool and additional battery for 7,499 Euros. The standard tires are Schwalbe Wicked Will Super Ground 29 × 2.4 for all four models.

Detailansicht
  • Flyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review
  • Flyer Uproc SL:X E-MTB Light 2024 ReviewFlyer Uproc SL:X E-MTB Light 2024 Review