Total Weight:
57.5 lbs (26.08 kg)
Battery Weight:
7.5 lbs (3.4 kg)
Frame Material:
6061 Aluminum Alloy
Frame Sizes:
17.5 in (44.45 cm)19 in (48.26 cm)Geometry Measurements:
Small/ Medium 17.5" (), Medium/ Large 19" (19" Seat Tube, 23.25" Top Tube, 27" Stand Over Height, 71" Wheel Base)
Frame Types:
High-Step
Frame Colors:
Gloss White with Taupe, Gloss Gray with Taupe
Frame Fork Details:
SR Suntour XCT with 80 mm Travel, Preload and Lockout, 11 mm Skewer with Quick Release
Frame Rear Details:
11 mm Axle with Bolts
Attachment Points:
Fender Bosses, Bottle Cage Bosses
Gearing Details:
10
Speed 1x10 SRAM X5, PowerGlide™ 1070 11-36T CassetteShifter Details:
SRAM X5 on Right Handle Bar
Cranks:
Samox Aluminum Alloy, 186 Q-Factor, MTB Sealed Cartridge BB,ISIS Spindle, 42T
Pedals:
Wellgo Aluminum Alloy Platform with Rubber Tread
Headset:
Samox Integrated 1-1/8"
Stem:
Promax Tool-Free Adjustable Angle and Rotation
Handlebar:
Zoom Aluminum Alloy, Low-Rise, 580 mm Wide, 15° Backsweep
Brake Details:
Tektro Auriga Hydraulic Disc with 160 mm Rotors, Tektro Levers
Grips:
Rubber Ergonomic
Saddle:
Selle Royal Free Way
Seat Post:
Promax, 6061 Aluminum Alloy
Seat Post Length:
300 mm
Seat Post Diameter:
30.4 mm
Rims:
Single Wall Aluminum Alloy
Spokes:
Stainless Steel, 14G Front and 13G Rear, Silver
Tire Brand:
Kenda Kranium, 26" x 2.1"
Wheel Sizes:
26 in (66.04cm)Tire Details:
40-65 PSI
Tube Details:
Schrader Valve
Accessories:
Plastic Fenders, Plastic Chain Guard with Reflective Side, USB Charging Port at Top of Battery, Spanninga Integrated LED Lights, Welded-On Rear Rack with Pannier Rods, Rear Mounted Adjustable Kickstand
Other:
Waterproof Grade IP65 Display Panel, Locking Removable Battery Pack, 1.8 lb 2 Amp Charger, Enter Settings on the Display Panel by Double Pressing the i Button
Jessy
8 years agoHey, I think there is a typo on the specs. The battery should be 500Wh instead of 374.4, just thought I should mention this!
BTW I love this site and the reviews. Very well done, professional, clean and very informative. Your reviews on soo many different E-bikes showed me how cool E-bikes could be, pushing me towards my first MTB E-bike buy! Thanks a lot!
ReplyCourt Rye
8 years agoGood catch Jessy! Thanks, I just fixed it but the site may take a day to update because we cache content for faster loading. I’m really glad you’ve decided to try a bike out, which one did you end up purchasing?
ReplyJessy
8 years agoI haven’t bought a bike yet actually, I discovered e-bikes 2 months ago and I’m looking to buy one this spring because snow is already around the corner up here northern Canada! I’m hesitating if I want a fat bike for some winter rides or staying with a mountain bike style, but right now my choices would turn round:
Daniel
8 years agoHi Court, Good review on the bike. What is interesting to me on this bike is the display. It appears to be the display that comes with the Bafang max drive, so it may appear that the max drive and other bafang displays are backward compatible.
I would love to see your review on the Volton bafang max drive bike. Bafang max drive runs standard as a 250 watt but looks like Volton have upped the voltage to get more power. Keep up the good work.
ReplyCourt Rye
8 years agoHey Daniel! It’s like you read my mind… Just spoke with Joe the other day about reviewing one of their bikes with the new Max drive. I’m excited to see it and yeah, maybe the displays are interchangeable? In any case, I was also a fan of the Colt as you can probably tell from my review here ;)
ReplyPeter
8 years agoLooking for a first time ebike. Will be using it for commuting, grocery store type hauling, carrying 2 dachshunds (< lbs total), and some credit card touring. I think this would be a good choice but wondering if the Felt Tote'm might be better (If we were living in a world where the price didn't matter. Would appreciate any thoughts.
ReplyCourt Rye
8 years agoHi Peter! I haven’t reviewed the Felt Tote’m yet but it appears to use the Shimano mid-drive (the older one that requires you to take the battery off each time to charge). That wasn’t my favorite drive system to be honest AND you don’t get a throttle as you would with the Colt. The Felt might be more efficient but heavier overall and larger. Either might work but I was really impressed with the Surface 604 Colt just given the price point and all of the nice options… hope this helps!
ReplyPeter
8 years agoThanks, Court. I test drove the Colt and really like it. I’ll be able to load 100 lbs on the back. The components are really nice for the price. Thanks for the prompt reply!
Peter
7 years agoWe bought a Colt. It was faulty from the time we got it. Service is not part of their warranty so we have to pay that. Faulty part is torque sensor. Have been waiting for 2 weeks because we were told everyone at 604 is at a conference. NOT IMPRESSED!
Frank D
8 years agoSpecs on the Colt/Rook say the seat post is 31.6 mm. I ordered a longer seat post (31.6 mm) only to find the seat tube would not accommodate it. With my micrometer the new seat post measured exactly 31.6 mm but the existing seat post measured 30.4 mm. I’ve returned the 31.6 mm post and re-ordered a 30.8 mm as it was the next closest size. Hope it works. This seemed to be news to Sam at Surface 604. He was going to speak to his engineer and get back to me, but I haven’t heard back yet.
ReplyI can only speak for the two bikes I have received but I suggest that if you are looking to change the seat post you might want to make careful measurements first.
Court Rye
8 years agoWow, thank you so much Frank! This is one area I work very hard to get right… I even carry a digital caliper. Perhaps their manufacturer changed something. I’m glad to hear that Sam replied to you and is looking into this himself. So sorry for your extra hassle with the seat posts :(
ReplyFrank D
8 years agoThanks for responding Court, and thanks for what you do. I am totally new to to the ebike concept. I used to ride my Specialized Allez about 150 miles per week, but now at 66 years old the experience is unpleasant and painful. Truly these ebikes, with comfort posture and power assist, allow Kathy and I to easily and enjoyably go where we otherwise could not.
We have a 3700 foot mountain which fills our front picture window. We are now riding out our driveway, up and around the mountain (1500 feet vertical) and coasting back home 2-3 times a week (weather permitting) I’m using level assit 1 or 2 and Kathy uses level three. It’s a great equalizer which allows us to ride together at the same speed. She really loves it.
I have watched about a hundred of your reviews which provided me a virtual experience and led me to insist upon the torque sensor system. Rarely is there a sense of the bike pushing when I don’t expect it or pushing too hard. I’m still playing with the assist levels.
Another update on the seat post subject: I have not heard back from Sam yet, but I did return the 31.6/350 mm seat post and ordered another 30.8/400 mm. It arrived today but it will not fit in the seat tube either. The next size down would be 27.2 mm which seems way too small as the stock seat post is 30.4 mm. So, I have no solution as yet because their stock post is too short for me which is surprising because at 6 feet tall with a 32″ inseam I’m guessing there will be many more like me, unless they do not care for optimal leg extension on the pedals. Also I am using all the vertical extension the handle bar system affords.
Brian B
7 years agoHi Frank, people seem to say that power assist is quite fast and powerful – do you find that you can still get a good work out or is the power assist too overpowering? I hope to try one soon, I definitely want an e-bike which feels like a bike and not a motor bike, Tks.
ReplyCourt Rye
7 years agoHi Brian! Hopefully Frank will respond too, but I wanted to add my voice. The Surface 604 Colt (and most pedal assist ebikes) offer several levels of assist, and you can definitely get a workout by using the lowest levels or turning it completely off once you’re up to speed on flat ground. I will occasionally just use the throttle to get going and then pedal with little bursts to keep speed or climb. I have also learned in recent years that consistent cardio vascular exercise is more important for healthy heart and fat burning than strained muscles. In my experience, the elevated pulse of deeper breaths and the excitement and positive feeling of riding (even with assistance) is very healthy.
Frank D
7 years agoI never use the throttle. There is very good torque assist from a standing start at any level of assist. Level one will assist to about 10 mph and that is what I use mostly. Beyond that I am on my own pushing speeds of 12 to 25 mph depending on terrain. If the grade increases upwards I can feel the assist kick in again when my speed slows to 10 mph or less. On steeper hills I use a higher level of assist to maintain higher speed because the hub motor can take no advantage of the gearing system and will labor at slow rpm under high load. Level 2 is good to 12-13 mph, level 3 to 15 mph, level 4 to 17 mph and level 5 to 20 mph. Choose your speed, choose the appropriate level and then peddle as hard as you want to push a little beyond the assist max speed. You can get the same workout at any of these speeds and the bonus is this; steep up hill rides are made doable and pleasant with modest effort. Kathy and I are now 68 years old. We ride out our driveway and climb 1400 feet vertical over 5 miles and then coast back home again for a nice one hour ride with lovely mountain top views. We wouldn’t be able to make such a climb without the assist. The grade is not severe, but substantial. I exceed 30 mph on the downhill return to home and 9 to 13 mph uphill on the climb using assist 1 or 2. She weighs 50 pounds less, uses levels 2 and 3 and we easily ride together at the same speeds. I am working much harder (by choice) and she is truly having a Sunday drive. Works great for us.
Brian B
7 years agoThanks Frank and Court, this feedback is exactly what I was looking for in helping me make the ebike jump. I’m 65 and have been a long time cyclist. Now that I’m retired I’ve slowed down but I still try to bike 40-50km / day. However, twice this past summer I’ve had to call my wife, asking her to pick me up as I had run out of steam after facing headwinds. An ebike will allow me to keep biking, my favourite activity, knowing that I have a helping hand whenever needed. I’ll have to get two as my wife said she’d start cycling if she had an ebike! Great site Court, keep up the excellent work!
Carl
8 years agoI was told by Sam that the Gloss White with Taupe is no longer available. That’s too bad because I don’t like the gray (it looks blue to me) but I really like this bike a lot. I’ve been in the market now for about 18 months and had seriously considered something from Radpower until I read your review for the Colt.
ReplyDon
7 years agoFrank D, I’m curious how your seat post problem was resolved as our dimensions are nearly identical and I’m considering the 604 Colt.
ReplyMike
7 years agoDemoed a Colt/Rook a week ago, and decided to purchase. Have to back-order as they didn’t have my frame size in the Colt. If you order a new one now, they are only available in Black. Handle-bar adjustment now requires tool, quick adjustment has been eliminated.
What sold me was a cruiser type bike with shocks, built-in lights, fenders and rack. Bike has aggressive enough stance that I can use on trails, paths not just paved. Not built for Mtn biking, but seems very strong/sturdy.
Power level seemed to only effect how much pedaling to get up to speed, and bike seems to want to get you at speed and fast. Didn’t try any hills. Tires are almost balloon and between gel seat, tires and shocks very comfy to ride.
Should be getting in about 2w, and can provide more info if anyone wants. Maybe some pic’s of what the new Black looks like… Battery life…
ReplyCourt Rye
7 years agoSweet! I got to see one of the new black models during a trip to Vancouver Canada a week ago and liked it. The swap from adjustable stem to rigid might be a good thing if you plan on doing some off-road riding. I’d love to hear how it works for you and appreciate this update and comment you posted Mike. Well said about power, accessories, and comfort being a differentiator.
ReplyLinda D'Angelo
7 years agoIs there a dealer in Victoria BC where I can purchase this bike?
ReplyCourt Rye
7 years agoGreat question Linda, I’m not sure off the top of my head but will check with Surface 604. I know that they do sell direct sometimes and might have some more feedback for you if you reach out. I know that the company is based in or near Vancouver.
Reply