Bike Review:

Transition Regulator CX

Full Power, Lower Weight, All Party

E-bikes are evolving fast, and the new Transition Regulator CX is proof that full-power no longer means back-breaking weight. At 47 pounds, it’s noticeably lighter than many of its big-watt siblings—and that makes a real difference out on the trail. With 85Nm of torque, 600W peak power, and a 600Wh battery, this is a mullet-wheeled trail smasher based on the proven Sentinel platform.

In this ride, I hit some classic PNW terrain—wet, slick, and chunky—to see how this rig holds up under pressure. Here’s how it climbed, descended, and left me wondering if mid-power still makes more sense… or if full power has finally found its sweet spot.

Geometry:

The Regulator CX borrows heavily from the latest Transition Sentinel, offering 150mm of rear travel paired with a 160mm RockShox ZEB fork. With the mullet setup and Schwalbe radials, this XT build weighed in right at 47 lbs—surprisingly reasonable for a full-power setup.

It’s clearly designed for aggressive terrain. While not the longest-travel eMTB on the market, the Regulator CX’s geo and build kit suggest it’s built to handle the big stuff: steep chutes, rock rolls, and techy descents. The low-slung weight and dialed suspension make it a perfect match for moody Northwest trail conditions.

Oh, and yes—there were a few GoPro and wardrobe malfunctions during filming, but the bike delivered even if my pants didn’t.

Climbing:

Let’s be real—this thing climbs like a full-power e-bike should. In Turbo mode, the Regulator CX delivers quick, torquey acceleration that makes 5,000 feet of elevation feel like a warmup. Power delivery is smoother than earlier generations, and while it’s not whisper-quiet like TQ systems, it’s one of the quieter full-power motors I’ve tested.

Body position felt spot-on—very Sentinel-like—and traction was excellent, even in the slop. Switchbacks are still a challenge, especially at full power. I tried turning down the assist to navigate one benchmark switchback but still couldn’t make it. That’s a common issue with eMTBs, and it’s not unique to the Regulator.

For a 2.5-hour ride covering 17 miles and nearly 5,000 feet of climbing—all mostly in Turbo—I still had some juice left at the end. Battery range is solid, and if you’re worried, Transition offers a range extender. But honestly, most of us don’t have 3+ hour blocks to ride every day anyway.

Descending:

Downhill is where this thing parties. Despite the added weight, the Regulator CX held its line through chunk, steeps, and features. The lower center of gravity from the motor/battery combo gave it impressive traction and composure, especially in the wet.

The suspension feels super dialed—eating up chunk while maintaining speed. On bigger features like rock rolls and slabs, the extra weight is noticeable at slower speeds and it did bottom out both front and rear. Still, stability and braking control were impressive, especially when kept rolling.

When it came to jumps, the Regulator handled better than most full-power e-bikes I’ve ridden, though it’s still heavy in the air. It’s stable and composed, but not playful like lighter bikes or mid-power options. Compared to the Heckler SL, for instance, it’s more “bruiser” than “bouncer.”

Who’s this bike for?:

The Transition Regulator CX is for riders who want all the power, but none of the excessive weight. It’s a great match for those who ride with full-power buddies, hit big terrain regularly, or want to maximize elevation in shorter windows.

If your priority is playful handling, or if you’re coming from a lighter, mid-power rig, it might feel like a big shift—literally. But for people used to heavier builds, the 47-pound weight is a big improvement.

This bike is built to climb fast and descend harder, and it does both with confidence. If you want the power and don’t mind the mass, it’s a killer option.

Final Thoughts:

The Regulator CX shows what modern full-power eMTBs can be—lighter, quieter, and far more refined. While it’s still heavy compared to mid-power bikes like the SX or Heckler SL, it’s impressively nimble for what it is.

I’d still like to try the SX variant to see how much playfulness it brings back, especially on jumps and slow-speed tech. But for steep, rugged, and wet trails where grip and confidence are king, the Regulator CX is a weapon.

If you’re full-power curious and want a bike that climbs like a goat and descends like it means it, Transition’s Regulator CX might just be your new trail boss.

Get your own Regulator from Evo