No. Rider fit on the M3i Studio is 5 ft to 6 ft 2 in., set by the two-way Studio Align handlebar, which moves up and down and not fore and aft. A rider of 6 ft 4 in. sits outside that range. The bike for them is the M3i Studio Plus, which carries the identical Studio Display and the identical 72 gears on a four-way Studio Curve handlebar and fits 4 ft 10 in. to 7 ft. The M3i reaches the same range on the same handlebar with the M Connect Display.

The handlebar, and only the handlebar. Both bikes carry the same Studio Display, the same 72 gears, the same generator power and the same self-tensioning Poly-V belt. The Studio has the two-way Studio Align handlebar and fits 5 ft to 6 ft 2 in. The Studio Plus has the four-way Studio Curve handlebar, adding fore and aft movement, and that widens the fit to 4 ft 10 in. to 7 ft. The frames differ with it: the Studio is 44 in. and 87 lb, the Studio Plus 49 in. and 92 lb.

Two things move in opposite directions, so read both figures together. The Studio carries the Studio Display with 72 gears, generator power and ANT+ alongside Bluetooth, where the M3i carries the M Connect Display with 24 gears over Bluetooth 4.0. In the other direction the Studio's handlebar is two-way against the M3i's four-way, so the Studio fits 5 ft to 6 ft 2 in. and the M3i fits 4 ft 10 in. to 7 ft. The Studio is the smaller bike at 44 in. and 87 lb against 49 in. and 92 lb. Which one suits you depends on whether the rider sits inside 6 ft 2 in.

Because the gear number is a scale the display draws, and the Studio Display draws a finer one. The magnetic brake under both bikes is identical and moves in infinite incremental changes; the M Connect Display on the M3i divides that range into 24 steps and the Studio Display divides it into 72. One click on a Studio therefore moves the load a third as far, and that finer step matters when the wattage you are chasing falls between two numbers. Gear 88 sits above all 72 as the emergency brake on both.

No. The Studio Display is powered by a generator in the flywheel hub feeding a super capacitor, so the bike makes the power its own screen uses while a rider pedals. There is no battery to change and no cord to run, which means the bike can go anywhere in a room without reference to where the outlets are.

Both standards, on the same display. The Studio Display is ANT+ certified and carries Bluetooth 4.0, so a strap built to either one pairs with it and no adapter or second sensor goes in between. The profiles it broadcasts on are CSCS, CPS, FTMS and Keiser Proprietary. A third-party cycling or fitness app reads them for cadence, speed and power, and a group cycling projection system reads them to put a rider on the wall.

To the inch. Both are 44 in. tall, 26 in. wide, 51 in. deep and 87 lb, which makes the Studio the smaller of the two bikes carrying the Studio Display. What separates them sits above the frame: the M3 runs a computer display on two AA cells that broadcasts nothing, and the Studio runs 72 gears of Ride by Color off a generator with both radios live. The M3 also holds a wider band of rider, 58 in. through 84 in. against the Studio's 5 ft to 6 ft 2 in.

Up to 350 lb, seated, out of the saddle and in the moment of climbing on. Nothing about the Studio's smaller frame lowers that figure: it is the same rating the 49 in. bikes carry, and the 87 lb the Studio weighs itself is an entirely separate number that only matters on the day the machine changes rooms.

44 in. / 1118 mm tall, 26 in. / 661 mm wide and 51 in. / 1296 mm deep. Those 5 in. it gives away to the Studio Plus in height are the reason people put this bike in a basement with low joists or a loft room with a sloping wall, where a rider standing out of the saddle needs every inch above the bar. Width and depth are identical across the family, so the 26 in. and the 51 in. are the same measurements you would take for any M Series bike.

Within 5 ft to 6 ft 2 in., yes, and the four-way seat is what does the work: saddle height and saddle setback both move, so the handover is a matter of noting two numbers on the posts. Reach to the grips is the part that does not move, because the Studio Align handlebar only travels up and down. Two riders more than a foot apart in height will feel that fixed reach, and a pair spanning 5 ft to 6 ft 4 in. wants the four-way bar on the M3i Studio Plus instead.

Frame assembly on the Studio is a two-person procedure, so line up a second pair of hands before the crate is opened. The job wants a torque wrench and crowfoot wrenches, the tools the Keiser M Series Assembly and Maintenance Kit is built around. It is sold separately.

Treat it as unconfirmed. The Keiser Bike Dumbbell Holder carries the M3 and the M3i in its own product name and Keiser has said nothing either way about the Studio, so order it for a Studio only if you are willing to find out. A frame built before May 2016 is a separate problem again, because it has no tapped hole for the holder at all. The other three parts are clear. The M Series Assembly and Maintenance Kit is scoped to every M Series Indoor Bike and carries the tools the two-person frame build wants. The Keiser Gel Seat Cover goes over the Keiser saddle or any other "narrow" saddle, which is the profile the Studio carries. The Keiser Floor Mat answers to the widest scope of all, M Series Cardio machines.