March 12, 2026 - Rocky Mountain is a name that resonates in mountain-bike communities around the globe, with a pedigree and legacy to match.
We were stoked when the opportunity came up to test the latest edition of their Instinct Powerplay SL Carbon 70, and I was more than excited when it arrived at my doorstep, fully charged and ready to roll.
I have been looking forward to reconnecting with Rocky’s eMTBs since the last time I test rode one back in 2020. Their latest edition claims to be lighter and quieter while offering even more rider/bike engagement than previous generations.
On first impressions, the Instinct Powerplay is one good-looking ride. The light-blue Smoothwall full carbon frame with black rear triangle is appropriately named “Cry Baby / Sweet Dreams / Black Dog”, and sets the pallet for the highlight matching Race Face ARC 30 wheels and Fox front suspension fork and rear shock.
The Instinct Powerplay SL Carbon 70 comes outfitted with a solid mix of trail bike components including SRAM’s GX Eagle wireless drivetrain, AX shifters along with Coda Silver Stealth 4-piston brakes.
The full suspension set-up is comprised of a 150 mm Fox 36 Float EVOL GRIP X front suspension fork, with a Float X Performance Elite Series 145 mm rear shock.
Rocky’s mid-high pivot Smoothlink suspension design brings it all together for a smooth, efficient ride, and Fox rounds out the build with its Transfer Performance Elite dropper post.
Attention to rider fit is a big part of the Rocky Mountain ride experience. The Instinct comes in five sizes, from extra small with 27.5-inch wheels, to extra-large with a 29-inch wheelset. There is a 10 mm difference in chainstay length between sizes to enhance handling characteristics.
The Instinct Powerplay SL 70 fit is also customizable. Rocky’s Ride-4 adjustment system allows for four different geometry options with the use of an allen key, while the head tube angle can also be adjusted +/-5 mm offset to suite individual preferences.
The Instinct Powerplay is powered by Rocky’s latest motor, the Dyname S4 Light. This drive system has been engineered to weigh 30% lighter than the Dyname 4.0 while offering 75 Nm of power, along with 700 max watts of category leading power.
By tuning down the motor’s operational RPM, the Dyname S4 Light produces a quieter, less whiny output than its predecessor, a noticeable and welcome difference when out on the trail.
The system uses a lighter 480Wh battery, which can easily be swapped out mid-ride to accommodate the Overtimepack 2.0 that allows you to extend your range on extra-long outings.
The Dyname S4 Light is managed via the top tube integrated Jumbotron, which nicely provides your essential ride data such as assist modes, battery levels, cadence, speed and trip mileage.
The four assist modes can also be customized to suit your own settings for power levels and torque management.
A two-button controller on the left side of the handlebar is the go-to for adjusting assist levels, and it can be easily navigated while wearing gloves.
On the trail, the Instinct Powerplay SL lives up to its pedigree and trail category classification. I instantly felt right at home on my medium-sized frame with its trail savvy geometry.
I could easily ride along with my younger and more fit companions using about 40% assist and still experience that physical and psychological high one gets while riding without assist. The motor was almost silent and unnoticeable, and I got close to four hours of ride time on a full charge.
The Instinct Powerpay SL Caron 70 performed exceptionally well on a variety of climbs. It powered up the steepest of terrain with ease, as the Maxxis Minion DHF 2.5 front and DHF 2.4 rear tire provided amazing traction, not only on loose sand, but also on the most muddy of sections.
Starting on a steep hill was also a breeze with its powerful motor and high torque working optimally to achieve this. I was also impressed that I could slow down my cadence on climbs to a more natural feel while still achieving amazing efficiency from the motor – not always possible with other eMTBs.
Harnessing the Instinct on tight, twisty, rocky/rooty trails presented the biggest challenge as my current skill level didn’t match the abilities and potential that the Instinct possesses.
It became a balancing act of finding the right assist and cadence to get up and over obstacles while keeping steady and moving forward in a smooth, controlled manner.
There were times when I felt the amazing flow, and other times when I was over-powered and went off the trail. Seeing the potential in an eMTB like the Instinct definitely made me crave for more.
Rocky’s Instinct Powerplay SL Carbon 70 checks off many boxes as a premium quality and attractive looking trail eMTB with bucket-list potential. If your mid-life crisis doesn’t see a Corvette in the driveway, perhaps having a Rocky Mountain Instinct SL in the garage just might fit the bill.
The SRP is $12,999 and for more information please visit here.
