Bull E-Stream EVO AM4
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Read the Review
Read the Review
Read the Review
Read the Review
Awards  Editors' Choice Award Top Pick Award Top Pick Award  
Price $5,399 List$5,975 List$5,999 List$6,525 List$6,299 List
Overall Score Sort Icon
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79
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Pros Good controls, huge distance range, confidence inspiring at speed, good component specOutstanding battery life, whisper quiet motor, just right geometry, intuitive operationVery nice build, stealthy looks, hard-charging downhill performanceLightweight for an e-bike, normal trail bike feel, range extender battery, quiet motorGreat build spec, very capable downhill, eye-catching design, integrated battery, Shimano E8000 powertrain
Cons Heaviest in test, sluggish at low speedsReadout display not standard feature, SRAM Guide brakes not powerful enough, reported motor failuresExpensive, sluggish handling at times, came setup with tubes in tiresLess battery storage capacity, less powerful drive unit, expensiveExpensive, heavy, lethargic climber, unimpressive range
Bottom Line Confidence and stability, the Bulls E-Stream EVO AM 4 likes to party and can do so for a long time thanks to its large battery and distance rangeThe 2020 Specialized Turbo Levo Comp checks in for the third consecutive time as Editor's Choice thanks to class-leading range, power and innovationThe enduro-oriented YT Decoy is capable of charging the descents as hard as you wantThe new Turbo Levo SL splits the difference between a regular trail bike and a full-power e-bikeWell-built with high-end components and the rock solid Shimano E8000 powertrain, the 2020 Commencal Meta Power 29 Team is a capable ebike but is held back by its limited range and weight
Rating Categories Bulls E-Stream EVO AM 4 Specialized Turbo Levo Comp YT Decoy CF Pro Turbo Levo SL Comp Commencal Meta Power 29 Team
E Bike Controls (10%)
7
7
8
7
9
Downhill Performance (35%)
8
9
9
9
9
Climbing Performance (20%)
8
9
7
8
7
Power Output (15%)
9
8
8
7
8
Distance Range (20%)
9
10
7
7
6
Specs Bulls E-Stream EVO... Specialized Turbo... YT Decoy CF Pro Turbo Levo SL Comp Commencal Meta...
Battery Size (Wh) 650Wh 700Wh 540Wh 320Wh (+160Wh Range Extender) 500Wh
Wheel size (inches) 27.5+ 29 29 front/27.5+ rear 29 29
Motor System Brose Drive S (250W) 650Wh Specialized 2.1, Custom Rx Trail-tuned 250W Shimano Steps E8000 Specialized SL 1.1 (240W) Shimano Steps E8000 250W
Motor Power (torque) 90Nm 70Nm 35Nm 70 Nm
Measured Weight (w/o pedals, Medium) 55 lbs 15 oz 50 lbs 7 oz 50 lbs 10 oz with tubes 41 lbs 10 oz (2lbs 6 oz - range extender battery) 52 lbs 5 oz
Fork RockShox Lyrik RC Boost Solo Air 150mm RockShox Lyrik Select RC DebonAir Fox 36 Float Performance Elite E Fox Rhythm 34 Float 150mm RockShox Lyrik Ultimate RC2 170mm
Suspension & Travel RockShox Deluxe RT 150mm Future Shock Rear (FSR) - 150mm V4L Virtual 4-Link 165mm Future Shock Rear (FSR) - 150mm Meta 160mm
Shock RockShox Deluxe RT RockShox Deluxe Select+ Fox Float DPX2 Performance Elite Fox Float DPS Performance RockShox Super Deluxe Ultimate
Frame Material Aluminum M5 Premium Aluminum Carbon Fiber M5 Premium Alloy Alloy 6066
Frame Size Tested Large Large Medium Large Large
Available Sizes 44/49/54 cm S-XL S-XXL XS-XL S-XL
Wheelset Formula Hubs/Bulls Rims Roval Traverse 29, 30mm internal E*Thirteen E*Spec Plus Roval Traverse 29, 30mm internal DT Swiss H1700 Spline
Front Tire Schwalbe Magic Mary Snakeskin, TLE, Apex, 27.5 x 2.8 Specialized Butcher GRID GRIPTON 2.6" Maxxis Minion DHF EXO 29" x 2.5" Specialized Butcher GRID TRAIL GRIPTON 2.3" Schwalbe Magic Mary 2.35"
Rear Tire Nobby Nic Snakeskin, TLE, Apex, 27.5 x 2.8 Specialized Eliminator BLCK DMND 2.3" Maxxis Minion DHR II EXO 27.5" x 2.8" Specialized Eliminator GRID TRAIL 2.3" Schwalbe Magic Mary 2.35"
Shifters Shimano Deore XT SL-M8000 SRAM S700 11-speed Shimano XT 11-speed SRAM NX Eagle SRAM GX Eagle
Rear Derailleur Shimano Deore XT RD-8000-GS, 11-speed SRAM GX, 11-speed Shimano XT 11-speed SRAM NX Eagle SRAM GX Eagle
Crankset SR Suntour 38T + Miranda Praxis Shimano XT Praxis M30 Shimano XT
Crankarm length not specified, but at least 170 165mm 165mm 170mm 165mm
Bottom Bracket not specified not specified part of the motor Shimano
Cassette Shimano SLX CS-M7000-11 , 11-speed, 11-42T SRAM PG-1130 11-42t E*Thirteen TRS Plus SRAM NX Eagle 11-50T SRAM GX Eagle 11-50T
Chain KMC X11E KMC X11ET not specified SRAM NX Eagle SRAM GX Eagle
Saddle Selle Royal Seta M1/Bulls Specialized Bridge 155 S2 SDG Radar Mountian Specialized Bridge Comp Fabric Scoop Flat Elite
Seatpost KS LEV-Integra X-Fusion Manic 150mm SDG Tellis 150mm X-Fusion Manic 150mm (large) KindShock LEV Integra
Handlebar Bulls Specialized Trail 780mm Renthal Fatbar 35 800mm Specialized Trail 780mm Ride Alpha 780mm
Stem Monkey Link Specialized Trail Renthal Apex 35 40mm Specialized Trail Ride Alpha Freeride 50mm
Brakes Magura MT5 hydraulic disk brakes SRAM Guide RE 4 piston 200mm rotors SRAM Code RS SRAM Guide R SRAM Code RSC, 200mm rotors
Grips Ergon Specialized Sip Grip ODI Elite Motion Specialized Trail Ride Alpha DH
Measured Effective Top Tube (mm) 638 630 590 625 623
Measured Reach (mm) 435 460 435 454 475
Measured Head Tube Angle 67 66 65.5 High/65.0 Low 66 65
Measured Seat Tube Angle 74 74.7 76.5 High/76 Low 74.5 77
Measured Bottom Bracket Height (mm) 354 347 340 Low 350 349
Measured Wheelbase (mm) 1230 1235 1205 1218 1275
Measured Chain Stay Length (mm) 462 455 443 437 453
Warranty Lifetime Five Years on frame Lifetime Two Years
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