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.

Zero SR/F

The new Zero SR/F. Photo credit: Zero Motorcycles

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.

Zero SR/F

The rear suspension of Zero’s new SR/F. Photo credit: Zero Motorcycles

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”.

Zero SR/F

The Zero SR/F has multiple ride modes. Photo credit: Zero Motorcycles

Riding Modes

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.

Power Pivot

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.

Chassis

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.”

Suspension

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.

Brakes

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.

Weight

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

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.

Warranty particulars

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 competition

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:

Range

Range PREMIUM STANDARD
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

Motor

Motor PREMIUM STANDARD
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 System

Power system PREMIUM STANDARD
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)

Drivetrain

Drivetrain PREMIUM STANDARD
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

Chassis / Suspension / Brakes PREMIUM STANDARD
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

Dimensions

Dimensions PREMIUM STANDARD
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
Rake? 24.5° 24.5°
Trail? 3.7 in 3.7 in

Weight

Weight PREMIUM STANDARD
Curb weight 498 lb 485 lb
Carrying capacity 502 lb 515 lb

Equivalent Fuel Economy

Economy PREMIUM STANDARD
Equivalent fuel economy (city)? 430 MPGe 430 MPGe
Equivalent fuel economy (highway)? 219 MPGe 219 MPGe
Typical cost to recharge? $1.61 $1.61

Pricing

Pricing PREMIUM STANDARD
MSRP $20,995 $18,995
Does not include government incentives. Does not include local shipping, applicable taxes, PDI, or road registration fees.
Warranty PREMIUM STANDARD
Standard motorcycle warranty* 2 years 2 years
Power pack warranty* 5 years/unlimited miles 5 years/unlimited miles

Subscribe to Our Newsletter

Thank you for subscribing!
This email is already subscribed.
There has been an error.