Class 1 e-MTB Comparison
Optibike G2 Loki vs Turbo Levo 4 vs DJI Avinox Platform
This comparison highlights measurable differences in motor output, battery capacity, suspension travel, drivetrain longevity, and intended rider profile between leading Class 1 electric mountain bike platforms.
| Feature | Optibike G2 Loki PowerStorm Motor | Rotwild R.EX Ultra DJI Avinox M1.24 Motor | Specialized S-Works Turbo Levo 4 S-Works 3.1 Motor |
|---|---|---|---|
| Price | $13,900 | ~$13,600 Est. based on €12,499 MSRP | $15,399 |
| Peak Power | 1250W +600W (+92%) Up to 1250W boost | 950W +300W (+46%) Up to 950W boost | 650W |
| Continuous Power | 750W +250W (+50%) Maintains full output without throttling. | 650W +150W (+30%) | 500W Throttles from 650W peak after approx. 15 mins. |
| Torque | 190Nm +85Nm (+81%) Dominant torque for climbing steep and technical terrain. | 105Nm | 111Nm +6Nm (+6%) |
| Battery Capacity | 1440Wh +600Wh (+71%) Quick-swap internal battery with integrated lock. | 864Wh +24Wh (+2.8%) | 840Wh |
| Ride Time (est)* | 6.8 Hours +2.8 Hours (+70%) Based on 210W average power consumption. | 4.1 Hours +0.1 Hours (+2.5%) Based on 864Wh internal battery. | 4.0 Hours Based on 840Wh internal battery. |
| Drivetrain | Rohloff 14-Speed Internal Hub Internal gears; shift while stopped; extended 3,000-5,000 mile chain life. | SRAM X0 Eagle Derailleur External derailleur; requires motion to shift; short chain life. | SRAM XX Eagle Derailleur External derailleur; requires motion to shift; short chain life. |
| Front Suspension | 170mm Travel +10mm | 160mm Travel | 160mm Travel |
| Rear Suspension | 170mm Travel +20mm | 150mm Travel | 150mm Travel |
| Standover Height | 26" Standover 3.6" Lower Ultra-low frame design for significantly easier handling. | 28.9" Standover 0.7" Lower | 29.6" Standover |
| Weight | 69 lbs +20.5 lbs vs Rotwild | 48.5 lbs Lightest | 52.2 lbs +3.7 lbs vs Rotwild |
*Ride Time Calculation: Based on an average power consumption of 210W.
Note: Comparison tags (Green/Blue) calculate the advantage relative to the lowest-spec model in each category. Green represents the best-in-class, Blue represents intermediate. Optibike "TruePower" represents sustained continuous output. Rotwild price is an estimate based on European MSRP.
Motor Output & Torque
Optibike G2 Loki
750W continuous output (TRUE POWER™)
190 Nm torque
Specialized Turbo Levo 4
650W peak output
111 Nm torque
DJI Avinox Motor Platform
950W peak output
105 Nm torque
Practical note: Torque influences steep climbing performance and sustained technical riding. Higher torque can improve climbing leverage and reduce fatigue during long ascents, especially on loose or technical terrain.
Continuous vs Peak Power
Peak power reflects short bursts. Continuous output is more representative of sustained performance on long climbs.
The G2 Loki emphasizes continuous output (750W). Many competing systems emphasize peak power figures. For extended climbing and technical terrain, continuous output can be a more relevant metric than brief peak bursts.
Battery Capacity
G2 Loki: 1440Wh battery
Turbo Levo 4: 840Wh battery
Avinox-equipped bikes: typically 600–800Wh depending on brand
Practical note: Battery capacity influences ride duration and total elevation gain potential. The Loki’s 1440Wh system provides substantially higher energy capacity than many mainstream e-MTB systems. Actual range varies with rider input, terrain, assist level, and conditions.
Suspension Travel
G2 Loki: 170mm front / 170mm rear
Turbo Levo 4: ~150–160mm (model dependent)
Avinox-equipped bikes: typically ~150–160mm
The Loki sits closer to enduro-level travel, which may appeal to riders seeking additional capability in rough terrain.
Drivetrain Longevity
Rohloff 14-Speed Hub vs 12-Speed Derailleur Systems
Drivetrain service life is an important ownership consideration for high-torque mid-drive e-MTBs.
Typical 12-Speed Derailleur Systems (Shimano / SRAM)
Modern e-MTBs commonly use narrow 12-speed chains and wide-range cassettes. Based on widely reported rider experience:
- Chain replacement is commonly required around 500–1,000 miles
- Under aggressive riding and high torque, wear may begin around 400–800 miles
- With careful cleaning and lubrication, some chains may reach 1,200–1,700 miles
- Cassette replacement often follows after multiple worn chains
High motor torque combined with narrow chain profiles and cross-chain angles contributes to faster wear compared to non-electric bikes. Service intervals vary widely depending on terrain, riding style, and maintenance.
Optibike G2 Loki – Rohloff 14-Speed Hub
The Loki uses a Rohloff internally geared hub featuring:
- Straight chain line
- Hardened steel sprockets
- No lateral derailleur movement
- Sealed internal gear system
Typical Rohloff user experience shows:
- Chain life commonly in the 3,000–5,000+ mile range
- Reversible sprockets for extended service life
- Consistent performance under sustained torque
Because torque is transmitted through a straight chain line and internal gear system, wear rates are typically reduced compared to derailleur-based systems.
Which Rider Benefits Most from Loki Features?
Riders who climb steep, technical terrain
Higher torque output may help on sustained climbs and technical ascents, especially where traction and controlled power delivery matter.
Riders seeking extended ride duration
The 1440Wh battery is suited for riders prioritizing longer ride time and higher total elevation gain potential.
Riders interested in reduced drivetrain maintenance
The Rohloff system may appeal to riders who prefer longer service intervals and consistent performance under high torque.
Riders who value custom build configuration
Each Loki is built to order in Colorado, allowing direct configuration for terrain, fit, and component preferences.
Riders who prioritize capability and durability over weight minimization
Some e-MTB platforms emphasize reduced system weight and smaller batteries. Loki prioritizes capability and durability, including:
- 190 Nm torque output
- 1440Wh battery capacity
- 170mm suspension travel
- Rohloff internally geared drivetrain
- Structural design intended to manage sustained high loads
For riders who regularly encounter demanding terrain, extended climbs, or long ride durations, these attributes may offer practical advantages.
Learn More
Compare full published specs:
https://shop.optibike.com/compare-specs/
Configure the G2 Loki:
https://shop.optibike.com/shop/loki/












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