Mayhem 140

Pivots stay tight and quiet with our new SprockLock pivot system. Most hardware relies on friction to prevent loosening, while SprockLock provides a true mechanical interlock to prevent pivot hardware from backing out. A splined axle with a locking cap keys into the frame, creating a more failsafe system than expanding hardware, with simpler and fewer parts.

Look at the drive side of the Mayhem 140 and you’ll see smooth, clean lines and minimal hardware. We went to great lengths making the 140 striking whether you’re feet or inches from it. All fasteners are accessed from the non-drive side, including the cable ports. Further increasing simplicity and reliability, the Mayhem 140 uses just 6 bearings, all of which are mounted into the links, not the frame members, and use replaceable secondary external seals to help keep moisture and contamination out.

Nobody does cable ports cleaner than this. Rather than molding metal threads into carbon to cinch cable ports to, we came up with an elegant solution that reduces material and increases reliability. A single fastener ties both sides together, and threads directly into the drive side port/cover. Port covers are interchangeable to accommodate all common cable configurations.

The Mayhem 140 is agile, and so are we. One of the many advantages of being a small, engineering-forward company is that we can react quickly to feedback. The original rubber protection that we designed for the Mayhem 140 went across the chainstay bridge and extended down into the wheel well. The thick rubber provided plenty of protection, but some taller tires were a tight fit. Based on feedback, we modified the protector to maximize tire clearance, offering more choice for riders. The new protector still runs across the chainstay bridge, but no longer extends down into the wheel well.

Tires that comply with the ETRTO standards for a 29x2.5-inch tire will fit with plenty of clearance. A running list of tires that are known to fit can be found here.

At the end of the day, it was a small change, but an important one for riders — and a perfect example of how nimble our passionate team can be in our quest to deliver the best riding experience possible.

While designing the Mayhem 140, we saw an opportunity to cut down on pesky frame rivnuts by developing a bottle mount that attaches through the Living Link mounting bolts. The mount is also slotted to provide placement for a strap to hold a pump and spares. As an added level of convenience, the mount can be removed easily from the side of the bike. No need to fumble around the cage inside the triangle. It might just be the coolest bottle mount ever made.

"With the new design, Spot managed to match the 130’s climbing ability, but on the descents, the 140 is a completely different, wild bone-crushing animal."

"The suppleness early in the stroke makes for confidence-inspiring control while tearing through roots at speed, and the supportive mid-stroke keeps the handling predictable when pressing into and accelerating out of the corners. Fun is my number-one gauge of a bike, and there is no shortage of good times when going downhill on the Mayhem 140."

"Spot is a family-owned company backed by loyal employes dedicated to designing great bikes. The brand doesn’t drop new models often, but when it does, you can bet the designers put their heart and soul into it. With the Mayhem 140, they’ve created something special."

Read the review — Mountain Flyer

"The Mayhem 140 brings a unique blend of traits to the table. It’s a fantastic climber, competent playful descender, and it’s equally fun on more mundane trails as it is on more challenging trails. Spot’s Living Link suspension delivers a lively, supportive, and composed ride that creates an engaging experience in a wide range of conditions. Colorado demands a lot of versatility from Trail bikes, it often asks them to act like Cross-Country bikes on long steep climbs, and then go downhill like Enduro bikes on insanely long descents. The Mayhem 140 taps into its Colorado heritage and does so without trying to be something it’s not — it doesn’t pretend to be a shorter travel Enduro sled or a beefed-up XC rig. Instead, the Mayhem 140 leans firmly into the Trail bike category and is better for it. There’s no identity crisis here — the Mayhem 140 is a Trail bike through and through."

Read the review — Blister

"The Mayhem 140 is a brilliant all-around all-trail bike that’s fast, capable, and more efficient than most."

"It is a damn fine machine and has no problem matching up against the category’s elite."

"Thanks to that Spot energy, it climbs superbly and quickly for a bike in its category, with traction in spades and great support."

"Pushing myself down a descent with lots of speed variation, corners of all sizes and speeds, plenty of square-edged rocks (loose and embedded), and a handful of smaller drops and jumps, the Mayhem 140 was nearly magical. The wheels skipped and floated across the terrain while the bike above remained calm."

"Spot’s Mayhem 140 is quirky and a bit different. And it’s also one of the best trail bikes you can buy."

Read the review — Bicycling

"My notes for the handful of rides I've taken it on so far all center around a similar theme that can be summed up in two words (that are best said with an East Coast accent): wicked fun."

"I ended up hitting some bigger moves on the Mayhem, ones that I typically reserve for longer travel bikes, largely because I wasn't worried about whether or not I'd end up blowing through the travel when I landed."

"The climbing position is upright and comfortable, and the suspension is efficient without being harsh, ideal traits for long rides on a variety of terrain."

"There's no shortage of good trail bikes out there these days, but Spot seem to have cooked up something a little different, a bike with suspension performance that helps it stand out from the crowd."

Read the review — Pinkbike