Here we go. Today, we have the Rocky Mountain Instinct Powerplay SL, which is Rocky’s first foray into the lightweight, mid-power eMTB segment. They slimmed down their proprietary drive unit for the first-ever Dyname S4 Lite, with bikes coming in around the low to mid 40-pound mark. It’s not the lightest eMTB, but its weight disappears out on the trails. Stick around to see if it’s the right SL eMTB for you.
What’s new with the rocky mountain Instinct Powerplay SL?
Well, it’s a brand-new platform, so all of it is new. But let’s dive into a couple of features before we go ride. Let’s start with the motor. We’ve got Rocky’s proprietary motor in here – the Dyname S4 Lite. It offers 65Nm of peak torque and up to 550 watts of peak power. It comes with a 480Wh battery that’s removable without having to pull the motor. The way Rocky handles battery integration and swapping might be the best scenario out there. Because of where the motor sits, you can easily remove the battery without having to drop the motor. But they haven’t had to cut a huge opening in the downtube to get the battery out, either. That way, you don’t compromise frame stiffness, but you can still swap batteries fairly quickly. Speaking of batteries, there’s a range extender available that adds an extra 314Wh of range. I also really like the way Rocky handles their display and connectivity. I hate installing an app for every bike I ride. Luckily, Rocky Mountain doesn’t have an app. You can access all of your settings from the top tube-mounted Jumbotron display – god bless them.
We see a lot of features on the Instinct Powerplay SL that we’re used to seeing on other Rocky Mountain bikes. We have a mid-high pivot 4-bar suspension design with 145mm of rear wheel travel and 150mm up front. It rolls on 29” wheels front and back in all sizes except for XS. It’s also MX compatible with an aftermarket link that adjusts for changes in geometry with a small back wheel. We have adjustable geometry via the Ride 4 system and size-specific chainstays. We also have a reach-adjust headset cup that allows for three different reach settings.
Rocky Mountain also offers a BC edition in the A70 build with 150mm of rear travel and a 160mm fork.
Let’s throw a leg over this thing and ride some bikes.
TLDR Summary
rocky mountain Dyname S4 Lite Motor
65Nm of torque with smooth, gradual power delivery, providing 550W of peak power and paired with a 480Wh battery for long-range trail days.
Mid-High Pivot Suspension
145mm rear, 150mm front travel with excellent traction and stability, excelling on technical climbs and rough terrain.
Adjustable Geometry & Build Options
Ride-4 system, size-specific chainstays, and an optional BC Edition (150mm rear travel, 160mm front) offer versatility for a range of rider preferences.
Dyname S4 Lite ebike motor and system
Starting with the motor performance, the Dyname S4 Lite quickly became one of my favorite lightweight ebike motor designs. It offers plenty of peak torque and wattage to find itself near the top of the SL motors with, in my opinion, class-leading power delivery. I much prefer the subtle dimmer switch feel to this motor over the on/off feel of others. Not that it’s a huge matter at the end of the day, but it’s nice to have the power gradually build up on you rather than hit you in the face and take your wallet before you could even see it coming. Essentially, you get what you give when it comes to this one. You’re not going to be able to phone it in and let the motor do all the work for you, although you’re not going to be overworking either. By way of comparison, it anecdotally feels comparable to the Shimano EP8 RS, the Bosch Performance Line SX, more powerful than the Fazua and way more powerful than the TQ. I’ve even done some riding with full-power folks and haven’t had to work myself into the ground to just hang.
The Dyname S4 Lite does prefer a bit of a quicker cadence in order to get the most out of it. Keep your spin above 75-80 or so, and you’ll be getting the most out of the motor. You’ll get 500 watts of peak power at normal cadences and up to 550 watts at RPMs above 100 or so. Speaking of power vs torque, the Instinct Powerplay SL excels on moderate grades vs steep climbs. That makes sense, too — It’s a lightweight eMTB with a reduced torque rating, though it has a pretty high peak power rating. That torque is what you’ll feel the most on steep climbs, and the watts are more what you’ll feel at quick cadences and harder gearing. At 550 watts, you’ll be getting close to full-power eMTB levels of assistance.
As for the range on the 480Wh battery, I’m getting upper 3,000s to low 4,000s for vertical feet gained on a single charge in full boost. I weigh roughly 190 pounds for reference. That range is pretty impressive for an SL eMTB. Depending on conditions, it’s between 7.5 – 9.3 feet/Wh.
I found an annoying little issue with the Dyname S4 Lite. When you’re taking a break, sipping water, trash-talking your friends, and you leave a foot on the pedal, the bike gets really mad at you. You’ll get an error message, and you’ll have to hop off the bike and recalibrate by shifting into your easiest gear. Of course, this can be avoided by not resting your foot on a pedal while stopped, but how else am I supposed to look cool on a bike?
Also, keep in mind that you’ll want to pay close attention to keeping your chain clean and lubed. With the extra idler wheels in the drivesystem, a dirty chain starts to muck things up worse than it would on a traditionally driven eMTB.
Rocky Mountain Instinct Powerplay SL Ride Review
Uphill
The Instinct Powerplay SL is a great climber in the category. It does a few things very well, including the body position, front-to-back balance, and traction. You pair those attributes with a great motor, and you’ve got yourself a top performer.
First, let’s dive into the suspension design. The mid-high pivot design excels at keeping the rear wheel pushing down into the dirt. It’s not skipping and hopping over obstacles very much. That does two things on an ebike. First, if your rear wheel isn’t in the dirt, all the power in the world doesn’t matter. The wheel will just spin in the air, and you’ll go nowhere. Second, it allows you to pedal through obstacles instead of getting bounced off of your seat. If you can pedal through obstacles, you’ll be able to take advantage of the extra power from the motor. The Instinct does both of those things very well.
The second main attribute that makes the Instinct SL a great climbing ebike is the body position. Ebikes can climb really steep grades. If you’ve ever tried that, you’ve likely noticed the front of the bike lifting up. Once that happens, you’re pretty toast. You have little to no control over where the bike is going. The Instinct’s longer rear center essentially ensures there’s more bike behind you. Proportionally, you’ll have more weight on the front wheel. The Instinct SL doesn’t suffer from the ebike floaty front-end effect as much as others I’ve ridden in the category. This front-to-back balance makes tougher climbs more manageable.
When it comes to handling and maneuverability, the Instinct SL rides a bit bigger and heavier than others in the category. If you find yourself in tough, technical climbing terrain, you’ll have to wrestle the bike a bit more to get it up and over big ledges and around awkward sections. That’s really the only place where the Instinct SL isn’t at the top of the class.
Downhill
I did my first few rides on the Instinct Powerplay SL completely blind. I knew nothing about the bike, suspension, travel, or geo beyond what I could assess from pulling it out of the box. I really like doing a few rides without knowing everything. I feel like it gives you a more unbiased first impression. In the case of the Instinct, I would have guessed it had a bit more travel than it does — I would have put it at the 150/160mm mark instead of 145mm. That goes to show you how a mid-high pivot can make a bike potentially feel a bit bigger and burlier than it really is. I think that’s exactly what’s going on here for a couple of reasons.
The Instinct Powerplay SL’s suspension design is excellent at contouring the ground and providing traction. It doesn’t get bounced around or knocked offline much in the rough. It’s great for that heels down type of riding. It doesn’t erase the bumps quite like the new Altitude, but the bumps don’t negatively affect it too much. You’ll feel them through the bike, but you’re not going to care too much. As you compress the suspension, the rear of the bike will grow from the slightly rearward axle path. I think that is a big factor in how the Instinct manages rough terrain so well with not a ton of travel.
Because the instinct contours the ground so nicely, your wheels will be on the ground most of the time. This is a bit of a double-edged sword. On one hand, you’ll have incredible amounts of traction and control in a wide variety of terrain. It’s tough to get this thing to slide out and corner unpredictably. On the other hand, the Instinct isn’t the most spry and nimble-feeling SL ebike. I’d describe it as sitting somewhere between SLs like the Heckler SL and Rise, and full-power dogs like the Wild and Vala. Maybe it’s a “Medium Light” when it comes to being able to bunnyhop, unweight, and maneuver the bike. It’s not necessarily the weight that makes it ride like an ML, but the suspension design and long rear center that seem to prioritize keeping the wheels on the ground rather than liveliness and poppiness.
When it comes to other handling traits like cornering, the Instinct SL shines. It’s great in the corners. I think it comes down to a combination of the traction on offer from the suspension design, the stability, and how easily the bike leans over. I had to double and triple-check that it wasn’t an MX with how easy it was to lean over. It makes it a ton of fun on all types of corners — flat, bumpy, scary, smooth, supported; the Instinct doesn’t really care. The body position on the Instinct is slightly forward, likely due to the longer chainstays, so proportionally, you’ll have a lot of bike behind you. That makes it easy to keep front-wheel traction as well as finding that center point between the wheels for good front-to-back balance in the corners. It’s tough to find yourself too far rearward on the Instinct. I don’t think the long chainstays negatively affect the cornering performance much. It still feels quick and snappy around a bend. If anything, the longer chainstays might make it a bit tougher to get the front wheel off the ground.
What would I change about the Rocky Mountain Instinct Powerplay SL?
I’d personally love to see a full-power setting on the Instinct SL. Orbea did something similar with the new Rise, allowing you to run 60Nm or 85Nm modes. I’d love the same on the Instinct SL. Of course, I’d be willing to take the range penalty in order to run full-power when needed. The range on the Instinct is great, and I don’t need that full range on offer for my shorter weeknight rides. I’d like to run full power and knock out some quicker laps.
The dropper lever is also pretty bad. It doesn’t hold the cable well, and it’s really hard to reach.
Rocky Mountain Instinct Powerplay SL Score: A Well-Balanced Trail Performer
The Rocky Mountain Instinct Powerplay SL delivers a solid performance across various terrains, balancing stability with versatility. While it excels in areas like traction and suspension control, it offers an overall well-rounded ride, making it a reliable choice for trail and all-mountain riders seeking a balanced eMTB experience.
Don’t skip reading this section. If you do, you don’t get to make any comments or judgments about the following scores.
I score these bikes against average bike performance in the category. If a bike is perfectly average, it will get a 0. If it is above average, it will get a +1 or +2. And conversely, if it’s below average, it will get a -1 or -2. There is nothing wrong with being average. Frankly, by nature, you’re probably average at most things. I’m exceptionally average — that’s how averages work. Luckily “average” is pretty damn great in the bike world right now.
Climbing Score: +1
Slightly above average climbing performance with good traction and body positioning, but less nimble on technical climbs.
Descending Capability Score: +1
Above average due to stability and traction, especially in rough terrain, though not exceptionally playful.
Suspension Performance score: +1
Strong suspension performance, offering great control and small bump sensitivity on varied trails. Mid-high pivot adds stability at speed and in rough terrain.
Handling Score: 0
Average handling — stable and predictable but lacks the quick, nimble feel of lighter riding bikes.
Build Quality score: +1
Better than average frame stiffness due to battery door design, with great “E” integration into the bike.
Versatility: 0
Average versatility, well-suited for trail and all-mountain riding.
Final thoughts
The Instinct Powerplay SL delivers a stable, traction-focused ride across various types of terrain. While its climbing and handling are solidly average, it shines in areas like suspension performance and descending stability. This bike is perfect for riders seeking a reliable, well-rounded eMTB that offers control and confidence on technical terrain, though it may not be the most playful option for those looking for more lively handling. Overall, it’s a strong choice for trail and all-mountain riders.
Comparisons
Let’s do a couple of comparisons now. The Instinct SL sits between the SLs and the full-power bikes in my mind. It sits closer to the SLs in a lot of ways, though, so I’ll compare it to SLs. Keep in mind it does have some full-power ride quality attributes, though.
Orbea rise Rise LT vs Instinct Powerplay SL
| Feature | Rise lt | Instinct powerplay sl |
|---|---|---|
| Travel | 150mm rear, 160mm front | 145mm rear, 150mm front |
| Motor | Shimano EP8 RS, 60Nm/85Nm torque modes | Dyname S4 Lite, 65Nm torque, 550W peak power |
| Battery | 420Wh or 630Wh, optional 210Wh range extender | 480Wh, with optional 314Wh range extender |
| Weight | Sub 40 on some models | Mid-40 pound range |
| Climbing Performance | Better suited for steep, technical climbs, coil suspension adds traction | Excellent balance and traction on moderate climbs, stable body position |
| Descending Performance | More capable on rough, technical descents with stiffer suspension setup | Planted, stable, but less playful or nimble |
| Handling | More nimble and agile with a quicker handling feel on smooth trails | Stable in corners, less nimble, prioritizes traction |
| Target Rider | Experienced riders tackling black diamond or technical trails | Trail/all-mountain riders who want stability, control, and a balanced eMTB |
The Orbea Rise LT is probably the closest bike I can think of when compared to the Instinct SL. They both have that all-mountain, jack-of-all-trades approach out on the trails. They will conquer a wide variety of terrain, including easy, flowy stuff, as well as rough and rugged trails. The Rise has a slight advantage when it comes to motor versatility with the 60Nm RS mode and the 85Nm RS+ mode. I think the Rise might also win the range battle against the Instinct SL when in the RS mode. The Instinct SL takes the win in downhill capability for me, though. It handles rough terrain with less drama, as there’s more traction and control on offer.
Read the Orbea Rise LT Review Here
Santa Cruz Heckler SL vs Instinct Powerplay SL
| Feature | heckler sl | Instinct powerplay sl |
|---|---|---|
| Travel | 150mm rear, 160mm front | 145mm rear, 150mm front |
| Motor | Fazua Ride 60, 60Nm torque | Dyname S4 Lite, 65Nm torque, 550W peak power |
| Battery | 430Wh, integrated, non-removable | 480Wh, with optional 314Wh range extender |
| Weight | 40-41 pounds (claimed weight) | Mid-40 pound range |
| Climbing Performance | Excellent on steep climbs, traction-focused, light and agile | Great on moderate climbs, stable but less nimble |
| Descending Performance | Fun, lively, plush suspension, top-tier handling in rough terrain | Planted, stable, but less playful or poppy |
| Handling | Nimble, great cornering, playful, and easy to bunnyhop | Stable in corners, less spry, prioritizes traction |
| Target Rider | Riders seeking lightweight, playful all-mountain/enduro performance | Trail/all-mountain riders who want stability, control, versatility |
The Heckler SL is a pretty different beast. In my opinion, it prioritizes “pedal bike” handling over ebike power and range. The Instinct SL wins both the power and range battles in this showdown. You’d hope, too, because it’s heavier than the Heckler SL. The Heckler SL certainly is the more lively and fun ride both up and down the mountain. It has a poppier and more rewarding suspension design.
Read the Santa Cruz Heckler SL Review Here
Unno Ikki vs Instinct Powerplay SL
| Feature | unno ikki | Instinct powerplay sl |
|---|---|---|
| Travel | 160mm rear, 170mm front | 145mm rear, 150mm front |
| Motor | TQ HPR50, 50Nm torque, 300W peak power | Dyname S4 Lite, 65Nm torque, 550W peak power |
| Battery | 360Wh, optional 160Wh range extender | 480Wh, with optional 314Wh range extender |
| Weight | 42 lbs | Mid-40 pound range |
| Climbing Performance | Lightweight and agile, requires rider effort on steeper climbs | Great on moderate climbs, stable but less nimble |
| Descending Performance | Feels like a pedal bike, smooth suspension with excellent small bump absorption | Stable, planted, great traction but less playful |
| Handling | Agile, quick, easy to maneuver, handles like a non-eMTB | Stable in corners, less spry, prioritizes traction |
| Target Rider | Riders seeking a lightweight, agile eMTB experience with minimal motor intervention | Trail/all-mountain riders who want stability, control, versatility |
These two are very different bikes. From a power and range standpoint, the Unno Ikki is very close to a pedal bike experience, in some good ways and in others that aren’t so great. The Instinct SL wallops the Ikki in both power and range. The tradeoff is that the handling on the Instinct SL is much heavier and more of a wrestling match. The Ikki’s handling, on the other hand, is very light and agile. Different stroked for different folks. These two bikes are at either extreme of the category in my mind.
Read the Unno Ikki Review Here
Who is the Instinct Powerplay SL for?
I like the instinct SL for a few different rider groups. First and foremost, I think the riders who will get the most out of this bike are the heels-down-and-plow type. They aren’t the most playful riders, they don’t get the wheels off the ground all that often, and they don’t mind some rough terrain from time to time. That’s where the Instinct shines. It’s not that the Instinct SL isn’t fun; it’s just not all that jibby for an SL eMTB. If you prioritize traction and contouring the ground, this one is for you.
I think the riders who find themselves torn between lightweight and pull-power ebikes should consider this one. It finds a nice middle ground between those two categories. If you have friends in both categories, this one will bridge that gap pretty well. You won’t kill your lightweight ebike friends, and you won’t kill yourself trying to hang with full-power folks.
I also think the riders who want to do really big rides on an ebike will like the Instinct SL. Especially for riders who want to do big rides on a bike that weighs less than 50 lbs. It offers the ability to swap batteries mid-ride without too much fuss. It’s not quite as easy as some other bikes, but it doesn’t compromise frame rigidity in the name of ultra-fast battery swaps. Factoring in the 314Wh extender opens up the big ride possibilities even further.
Well, that’s going to be done for the Instinct Powerplay SL. See you next time.
FAQs
What type of motor powers the Rocky Mountain Instinct Powerplay SL?
The Instinct Powerplay SL features Rocky Mountain’s Dyname S4 Lite motor, providing 65Nm of torque and 550W of peak power for smooth assistance.
What is the battery range of the Rocky Mountain Instinct Powerplay SL?
The 480Wh battery offers 7.5 to 9.3 feet/Wh, with a 314Wh range extender option.
Who is the Rocky Mountain Instinct Powerplay SL designed for?
It’s perfect for trail and all-mountain riders seeking balanced climbing efficiency and descending capability with a lightweight build.
How does the Rocky Mountain Instinct Powerplay SL perform on technical climbs?
Its mid-high pivot suspension and chainstays ensure excellent traction and stability on technical climbs.
How does the Rocky Mountain Instinct Powerplay SL handle on descents?
It excels with stability and control on descents, focusing on traction and cornering precision.
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