BOTM : "MAGIC MUSHROOM" UPPER 2.0
"Make it match the truck...", by REGROUP
The truck in question belongs to a good friend of mine, and it’s an INEOS Grenadier in a color INEOS calls Magic Mushroom — yes, really. It’s a warm putty-grey that looks quiet from across the parking lot and gets complex the closer you get. We matched it as the base, then let in a little chartreuse and a little purple for the accents. I’m told those are the hot colors of 2026. I’m not going to argue: it turned out great.
Underneath the paint is an OPEN UPPER 2.0. If you’ve followed our trips to Basel, you know we’re fans — the 2.0 frames retain the ride quality OPEN is known for and add aero shaping where it counts, with clearance for 35 to 46mm tires and a T47 bottom bracket, all made in Portugal. The UPPER is the lighter layup of the two.
OPEN also makes its own one-piece bar and stem and its own seatpost for these frames, so the whole front end is integrated and — because we could — painted to match. The party trick of that cockpit is a stem length you can adjust in 5mm steps without buying a new bar, which is the kind of idea you wonder why nobody had sooner.
The build
The drivetrain is SRAM Force XPLR AXS, one ring, with a power meter and 165mm cranks. That’s the setup I’d put on my own gravel bike, and it’s the setup I did put on my own gravel bike.
Wheels are ENVE’s new AR40 — the redesigned Foundation wheel that’s content on road or gravel, 40mm deep and 25mm wide inside. It’s the most accessible ENVE there is, and with the new logo decals on it you’d be hard-pressed to tell it from the ones that cost twice as much. Rolling on them, 45mm Pirelli Cinturato Gravel RMs.
The saddle...
But the saddle, the saddle. The part that catches the eye and demands attention. Both it and the bars got the Busyman treatment — Mick Peel in Melbourne. He’s been working with Alcantara lately, the synthetic suede, often for clients who want the bike to match something in the garage. Well, here’s one.
The saddle in that soft suede is, honestly, insane. I’ve never seen anything like it. The bar wrap matches, and the two of them together are what turn a nicely painted bike into this bike. The last piece was custom decals from Slik Graphics, drawn to pick up the same chartreuse and purple, so the frame, the cockpit, the wheels and the wrap all read as a single idea. That’s the trick with a build like this.
- Thanks to Regroup for this great Custom build and sharing the photos and story about this cool bike, good job team!
Detailed specs:
| Component | Spec |
|---|---|
| Frame | OPEN UPPER 2.0, RRTP , painted to match |
| Headset | OPEN Custom IS52/40 |
| Fork | OPEN U-Turn Aero |
| Stem | OPEN BAR, painted to match |
| Handlebar | OPEN BAR, painted to match |
| Handlebar grip | Alcantara bartape by Busyman Bicycles |
| Seatpost | OPEN 27,2mm |
| Saddle | Alcantara-wrapped, by Busyman Bicycles |
| Brakes | SRAM FORCE Paceline, Rotors 160 |
| Shifters | SRAM FORCE XPLR AXS |
| Crank | SRAM FORCE XPLR AXS POWER METER 165mm |
| BB | SRAM DUB T47 85.5mm Road Wide |
| Chainrings | SRAM 40 |
| Rear derailleur | SRAM FORCE XPLR AXS |
| Cassette | SRAM FORCE XPLR 10-46T |
| Chain | SRAM FORCE XPLR |
| Wheel | ENVE AR40 Foundation |
| Tire | PIRELLI Cinturato Gravel RM 700x45 |
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