Key Takeaway: The Salsa Cassidy is a 29er full-suspension enduro frame — not a hardtail — with 165mm of rear travel, a 180mm fork, and a slack 63.8° head tube angle. Reach runs from 439mm (Small) to 502mm (Extra Large), with a 75.7° effective seat tube angle to keep you over the bottom bracket on climbs. As of April 2026, the alloy Cassidy frame-and-shock package is $1,099 at Jenson USA (down from $2,649). Comparable alloy enduro frames from Transition, Devinci, and Santa Cruz typically sit in the $1,600–$2,200 range — the Cassidy at this discount is one of the standout frame deals of the season.

Salsa Cassidy 29er: A Modern Enduro Reference

The Cassidy is Salsa's purpose-built enduro platform. It pairs Dave Weagle's Split Pivot+ suspension layout with a long-and-slack 29er chassis tuned for technical descending, bike-park laps, and the kind of long, chunky lines where a 140mm trail bike starts to run out of travel. It is not a cross-country bike, it is not a trail bike, and it is not a hardtail. It is a 165mm-rear-travel descending machine that climbs better than its travel numbers suggest.

Geometry: Why It Feels the Way It Does

The Cassidy's geometry is built around three numbers: a 63.8° head tube angle, a 75.7° effective seat tube angle, and 432mm chainstays across all sizes. Together they create a chassis that's stable at speed, weighted forward enough to climb without nosing up, and short enough out back to feel snappy through tight switchbacks.

  • Head tube angle: 63.8° (slack — built for steep, technical descending)
  • Seat tube angle: 75.7° effective (steep — keeps you over the BB on long climbs)
  • Reach range: 439mm (Small) → 502mm (Extra Large)
  • Chainstays: 432mm (compact, snappy through tight terrain)
  • Adjustable geo: Flip Chip 2.0 swaps head angle and BB height for terrain or wheel size

The Flip Chip 2.0 in the shock link mount is a useful detail. Drop the chip into the slack/low setting for big-mountain runs and 29er stability; flip it the other way to recover bottom bracket height when running a 27.5" rear wheel in a mullet build. That on-the-fly geometry adjustment is unusual at this price point and meaningfully extends the useful life of the frame as your riding evolves.

Sizing: Reach Numbers That Actually Match the Marketing

Salsa's sizing on the Cassidy lines up with current enduro norms. Use these reach numbers as your starting point:

  • Small: 439mm reach — fits riders ~5'4"–5'8"
  • Medium: ~460mm reach — fits riders ~5'7"–5'11"
  • Large: 481mm reach — fits riders ~5'10"–6'2"
  • Extra Large: 502mm reach — fits riders 6'1"+

If you're between sizes, Salsa recommends a shorter stem (40–50mm) on all sizes to balance the longer front-center. Sizing up gives you more high-speed stability; sizing down keeps things lively in technical terrain.

Parts Compatibility: What You Need to Build It Up

The Cassidy ships as a frame plus RockShox Super Deluxe Select+ rear shock (230 × 62.5mm). To complete the build, you'll need:

  • Fork: 170–180mm enduro fork with 42–51mm offset (RockShox Lyrik Ultimate, Fox 38, or Marzocchi Bomber Z1 all work)
  • Wheels: Super Boost 12 × 157mm rear, conventional 110mm Boost front (DT Swiss, Industry Nine, We Are One all offer Super Boost options)
  • Drivetrain: 1x12 is standard at this travel level (SRAM GX/X0 Eagle Transmission or Shimano XT/XTR)
  • Brakes: 4-piston enduro brakes with 200mm front rotor (SRAM Code, Shimano XT, Hayes Dominion A4)
  • Dropper: 30.9mm post; 170–200mm travel depending on frame size
  • Bottom bracket: 73mm BSA threaded — works with any standard 73mm BSA crank
  • Headset: ZS44 / ZS56 (FSA Orbit 1.5E included; angle-adjust headsets drop in if you want even slacker)

One non-negotiable: the leverage rate is tuned for air shocks, so coil shocks are not compatible with this frame. The included Super Deluxe Select+ is a solid match out of the box.

Salsa Cassidy vs. Comparable Enduro Frames

The Cassidy's natural comparisons are other 29er alloy enduro frames in the 160–170mm-rear-travel range. A few useful reference points:

  • Transition Spire (alloy): 170mm rear, 64.0° head angle, similar enduro target. Frame typically $1,800–$2,100.
  • Devinci Spartan (alloy): 170mm rear, 63.5° head angle, also Split Pivot. Frame around $2,200.
  • Norco Range (alloy): 170mm rear, high-pivot design, more downhill-biased. Frame in the $2,000+ range.
  • Salsa Cassidy (alloy): 165mm rear, 63.8° head angle, Split Pivot+. Frame currently $1,099 on sale (was $2,649).

The Cassidy is also closely related to the carbon Salsa Blackthorn — same suspension platform, same general geometry, ~700–900g lighter, and considerably more expensive. For most riders building a bike-park or shuttle-day rig, the alloy Cassidy's value-to-performance ratio is excellent and the weight penalty is barely noticeable on the descents the bike is built for.

Frequently Asked Questions

Is the Salsa Cassidy a hardtail?

No. The Cassidy is a full-suspension 29er enduro frame with 165mm of rear travel and Split Pivot+ suspension. Salsa's actual hardtail is the Timberjack. The Cassidy and Timberjack are very different bikes — the Cassidy is built for technical descending, the Timberjack for trail riding and bikepacking.

What's the difference between the Cassidy and the carbon Salsa Blackthorn?

Same suspension platform (Split Pivot+) and similar geometry, but the Blackthorn is carbon and the Cassidy is alloy. The carbon frame weighs ~700–900g less and costs significantly more. The alloy Cassidy has the durability and lower replacement cost that aggressive riders often prefer for bike-park and shuttle days.

Can I run a 27.5" rear wheel for a mullet setup?

Yes. The Cassidy clears 27.5 × 3.0" rear tires, and the Flip Chip 2.0 lets you adjust the head angle and bottom bracket height to compensate for the smaller rear wheel. Confirm your hub spacing matches the frame's Super Boost 12 × 157mm rear before swapping wheels.

What size fork should I run on the Cassidy?

Salsa designed the Cassidy around a 170–180mm-travel 29er fork with 42–51mm offset. RockShox Lyrik Ultimate, Fox 38 Performance Elite, or Marzocchi Bomber Z1 in 180mm all work well. Running a fork outside the 170–180mm range will alter geometry and suspension feel away from the intended balance.

Is this a one-bike quiver or a dedicated descender?

It's optimized for descending. With 165mm of rear travel and a 63.8° head angle, the Cassidy wants chunky enduro terrain, bike park laps, and long technical descents. If your riding is split 50/50 between flowy trail and aggressive enduro, the Cassidy will make every climb feel a touch slower and every descent feel meaningfully better than a 140mm trail bike. If you mostly ride mellow flow with occasional gnar, a 140–150mm trail bike — like the Salsa Horsethief — is a better all-around match.