Zero Motorcycles has unveiled its newest bike, the Zero SR/F. The SR/F has been teased for quite some time, but Zero completely unveiled the new machine today (25 Feb 2019). Zero claims the SR/F is its highest performing motorcycle with a top speed of 124 MPH. Available in two versions, Premium and Standard, the SR/F packs some new features that previous Zero electric motorcycles have not.
A more powerful battery pack
The SR/F hosts a newly designed ZF14.4 lithium-ion battery. With Zero’s added Power Tank, Zero claims range could be as much as 200 miles in “city” riding. Zero also claims that the new battery has been combined with an aluminum heat-sink housing and thermal transfer interface to ensure consistent cell cooling and maximum long-term powertrain performance.
New ZF75-10 Motor
Zero’s specs for the new ZF75-10 motor seem impressive. With a 110 HP and 140 ft-lbs of torque, acceleration should be brisk, to say the least. According to Zero, the bike’s internal permanent magnet brushless architecture and a passive air-cooled design performance should be at the top tier of electric motorcycles in its class.
Rapid charge system
A scalable rapid charge system allows the bike to be configured for 3 kW, 6 kW, 9 kW or 12 kW of charging at any standard Level 2 charge station. However, charging times vary widely depending on the power system. Charging times can be somewhat complex, so for full details on charging times, please see the chart below.
A “smart” motorcycle?
The SR/F is the first Zero electric motorcycle to utilize Cypher III, Zero’s proprietary operating system. Zero says it acts as a “hub” to integrate all motorcycle systems. Included in the “hub” is Bosch’s MSC system. It helps to improve stability regardless of road surface or conditions. When combined with Cypher III, Zero says the MSC’s full capabilities are available resulting in “best-in-class straight-line ABS and cornering brake control, traction control, and drag torque control”.
The SR/F comes standard with four ride modes including Street, Sport, Eco, and Rain. In addition, riders can take advantage of up to 10 programmable custom modes.
Zero claims that its proprietary concentric motor and swingarm pivot design provides the optimal architecture to ensure constant drive-belt tension and maximum torque delivery to the rear wheel. This is accomplished through a custom-designed, large-bearing swingarm pivot. It allows ample space for the motor while allowing a slim waist. A byproduct of a narrow design can be enhanced rider ergonomics and bike maneuverability.
The SR/F’s engine is wrapped in a steel trellis frame. The “custom” swingarm has been designed specifically for the SR/F. Zero claims that the powertrain is “perfectly distributed, resulting in a weight-optimized mass-centralized design.”
The suspension has been provided by Showa. At the front is a Showa 43 mm fork. It is adjustable for spring preload as well as compression and rebound damping. The rear features a Showa 40 mm piston, piggy-back reservoir shock that is also adjustable for spring preload, as well as compression and rebound damping. Interestingly, the suspension components are the same for the standard and premium models.
Braking duties on the front end utilize Bosch Advanced MSC, coupled to 320mm X 5 mm discs wrapped by dual J-Juan radial 4-piston calipers. At the rear, Bosch Advanced MSC coupled to a single 240mm X 4.5mm disc wrapped by a J-Juan single piston floating caliper.
Although the SR/F packs impressive performance for an electric motorcycle, it’s no lightweight. With a claimed weight of 485 LBS (220 KG) for the standard version and 498 LBS (276 KG) for the Premium versions, the SR/F is a fairly hefty machine.
Pricing for the standard version starts at $18,995 for the 3 kW charger model and $20,995 for the 6 kW charger model. Other options such as a flyscreen, heated grips, and other tidbits are available. Not included in the stated pricing is local shipping, applicable taxes, PDI, or road registration fees.
The Zero SR/F comes with a 2 year “standard motorcycle warranty”. The powerpack is covered by a 5 year unlimited mileage warranty as well.
The electric motorcycle market is rapidly heating up. Manufacturers from many companies have models that are or will be competing with the Zero SR/F. The next contender is coming from Lightning Motorcycles with their Lightning Strike. With a claimed starting price of $12,998 and a speed/range rating of 150 MPH and 150 miles, it’s clear that choices in the electric motorcycle market will be varied and interesting.
Zero Motorcycles’ Full Claimed Specifications:
|City||161 miles||161 miles|
|Highway, 55 mph (89 km/h)||99 miles||99 miles|
|Combined?||123 miles||123 miles|
|Highway, 70 mph (113 km/h)||82 miles||82 miles|
|Combined?||109 miles||109 miles|
|Peak torque||140 ft-lb||140 ft-lb|
|Peak power?||110 hp (82 kW) @ 5,000 rpm||110 hp (82 kW) @ 5,000 rpm|
|Top speed (max)?||124 mph||124 mph|
|Top speed (sustained)?||110 mph||110 mph|
|Type||Z-Force 75-10 enhanced thermal efficiency, passively air-cooled, interior permanent magnet AC motor||Z-Force 75-10 enhanced thermal efficiency, passively air-cooled, interior permanent magnet AC motor|
|Controller?||High efficiency and power dense, 900 Amp, 3-phase AC controller with regenerative deceleration||High efficiency and power dense, 900 Amp, 3-phase AC controller with regenerative deceleration|
|Power pack||Z-Force® Li-Ion intelligent integrated||Z-Force® Li-Ion intelligent integrated|
|Max capacity||14.4 kWh||14.4 kWh|
|Nominal capacity||12.6 kWh||12.6 kWh|
|Charger type||6.0 kW, integrated||3.0 kW, integrated|
|Charge time (standard)||2.5 hours (100% charged) / 2.0 hours (95% charged)||4.5 hours (100% charged) / 4.0 hours (95% charged)|
|With 6 kW Rapid Charge option||1.5 hours (100% charged) / 1.0 hour (95% charged)||1.8 hours (100% charged) / 1.3 hours (95% charged)|
|Transmission||Clutchless direct drive||Clutchless direct drive|
|Final drive||90T / 20T, Poly Chain® HTD® Carbon™ belt||90T / 20T, Poly Chain® HTD® Carbon™ belt|
|Chassis / Suspension / Brakes|
|Front suspension||Showa 43 mm Big Piston Separate Function forks, with adjustable spring preload, compression and rebound damping||Showa 43 mm Big Piston Separate Function forks, with adjustable spring preload, compression and rebound damping|
|Rear suspension||Showa 40 mm piston, piggy-back reservoir shock with adjustable spring preload, compression and rebound damping||Showa 40 mm piston, piggy-back reservoir shock with adjustable spring preload, compression and rebound damping|
|Front suspension travel?||4.72 in||4.72 in|
|Rear suspension travel?||5.51 in||5.51 in|
|Front brakes||Bosch Advanced MSC, dual J-Juan radial 4-piston calipers with radial master cylinder, 320 x 5 mm discs||Bosch Advanced MSC, dual J-Juan radial 4-piston calipers with radial master cylinder, 320 x 5 mm discs|
|Rear brakes||Bosch Advanced MSC, J-Juan single piston floating caliper, 240 x 4.5 mm disc||Bosch Advanced MSC, J-Juan single piston floating caliper, 240 x 4.5 mm disc|
|Front tire||Pirelli Diablo Rosso III 120/70-17||Pirelli Diablo Rosso III 120/70-17|
|Rear tire||Pirelli Diablo Rosso III 180/55-17||Pirelli Diablo Rosso III 180/55-17|
|Front wheel||3.50 x 17||3.50 x 17|
|Rear wheel||5.50 x 17||5.50 x 17|
|Wheelbase?||57.1 in||57.1 in|
|Seat height?||31.0 in||31.0 in|
|Accessory, low||30.3 in||30.3 in|
|Accessory, tall||31.9 in||31.9 in|
|Trail?||3.7 in||3.7 in|
|Curb weight||498 lb||485 lb|
|Carrying capacity||502 lb||515 lb|
Equivalent Fuel Economy
|Equivalent fuel economy (city)?||430 MPGe||430 MPGe|
|Equivalent fuel economy (highway)?||219 MPGe||219 MPGe|
|Typical cost to recharge?||$1.61||$1.61|
|Does not include government incentives. Does not include local shipping, applicable taxes, PDI, or road registration fees.|
|Standard motorcycle warranty*||2 years||2 years|
|Power pack warranty*||5 years/unlimited miles||5 years/unlimited miles|