Which saddle width do I need?

Specialized sizes saddles by your sit-bone width. Measure it at a Specialized dealer, or at home: sit on a piece of cardboard on a chair with your knees at 90°, mark the centre of each sit-bone impression and measure between the dots. Then use Specialized’s own mapping in the size guide on this page: up to 100 mm → 130 mm saddle, 101–120 → 143, 121–140 → 155, 141–160 → 168, 161–176 → 180, 177–195 → 200. If your width isn’t made in that model, Specialized’s size tool picks the nearest one available.

Mirror, MIMIC or foam: what’s the difference?

Mirror is Specialized’s 3D-printed padding, a honeycomb lattice printed from liquid polymer whose density is tuned zone by zone for sit-bone support; Specialized claims clear pressure reductions over foam (for example up to 26% on the Romin EVO). MIMIC is a multilayer soft-tissue technology that Specialized developed for women, to maintain equilibrium and reduce swelling in soft tissue. Foam saddles use Specialized’s padding levels, from Level 1 (lightest, most direct) to Level 5 (softest, for casual riding).

S-Works, Pro, Expert or Comp: what changes?

Mostly the materials and the weight. S-Works saddles use carbon shells and oversized carbon rails and are the lightest (the S-Works Power weighs 159 g in 143 mm). Pro models keep the same Mirror pad as the S-Works but use titanium rails and a nylon base with reclaimed carbon. Expert and Comp models use hollow titanium or Cr-Mo rails, and the Comps use foam, gel or MIMIC instead of Mirror. The shape is the same across a family; the widths on offer vary by model.

Power, Power EVO, Romin EVO or Phenom: which shape?

Power is Specialized’s short-nose saddle with a wide, long channel, made for aggressive positions; the Power EVO evolves it for riders who move fore and aft, with a 1 cm wider nose, an invisible cutout and longer rails. Romin EVO is a traditional long, curved saddle for low, aero race positions that still lets you slide back and forth. Phenom is long (27 cm on the Mirror versions) and flat, popular in MTB, gravel and road. Bridge is broad and flat, for on- and off-road control.

SPECIALIZED Phenom Comp Saddle

Black

€99,00

~~€99,00~~ €99,00

Tax Included
EU Destination Selected (Spain)

+3 units in stock

The essentials

Best for

MTB
Trail
Long rides

SPECIALIZED Phenom Comp Saddle - Black

Technologies

Specifications

Shape	Phenom · long, flat
Padding	Level 2 padding
Shell	Carbon-reinforced, Adaptive Edge
Rails	Hollow Cr-Mo
Weight 143 mm (claimed)	254 g
Weight 155 mm (claimed)	260 g
Widths	143 / 155 mm
Use	MTB

Phenom · long, flat

The Phenom shape: long and flat (27 cm on the Mirror versions), with a rounded, anti-snag tail; Specialized says it is the choice of racers from road classics to downhill world championships.

Level 2 padding

Medium-density PU foam: bike feel with additional cushioning, in Specialized’s scale from Level 1 (firmest) to Level 5 (softest).

Adaptive Edge

A carbon-reinforced shell with flexible outer edges that adapt to your body for a near-custom fit and all-day comfort.

Low-friction panels

Low-friction panels on the nose and tail for pedalling efficiency and easier movement on and off the saddle.

SWAT mounts

SWAT-compatible mounts moulded into the saddle base, for sleek, integrated storage.

Body Geometry

Specialized’s ergonomic design method since 1997: every saddle starts with pressure mapping, anatomical measurement and testing with riders, and Specialized says its patented Body Geometry designs are lab-tested to ensure blood flow to sensitive arteries.

SPECIALIZED Phenom Comp Saddle - Black

Compare with

	SPECIALIZED Phenom Comp Saddle - BlackA mountain bike saddle designed for comfort and strength over long days on the trail: the long, flat Phenom shape with a carbon-reinforced Adaptive Edge shell whose flexible edges conform to your body, low-friction panels on the nose and tail, Level 2 padding and durable hollow Cr-Mo rails.	SPECIALIZED Phenom Pro Mirror Saddle - Black Choose it for the long, flat Phenom with Mirror on titanium rails.	SPECIALIZED Phenom Comp Mimic Saddle - Black Choose it for the long, flat Phenom with MIMIC.
Regular price	€99,00	€223,30	€109,00
Safety rating	—	—	—
Shape	Phenom · long, flat	Phenom · long, flat	Phenom · long, flat
Padding	Level 2 padding	Mirror · 20,055 struts	MIMIC
Shell	Carbon-reinforced, Adaptive Edge	Nylon with 15% reclaimed carbon	—
Rails	Hollow Cr-Mo	Hollow titanium, 7x7 mm	Hollow Cr-Mo
Weight 143 mm (claimed)	254 g	262 g	245 g
Weight 155 mm (claimed)	260 g	267 g	254 g
Widths	143 / 155 mm	143 / 155 mm	143 / 155 / 168 mm
Use	MTB	Gravel, XC, trail and e-bike	MTB and all-round
Length	—	270 mm	—
Weight 168 mm (claimed)	—	—	261 g

SPECIALIZED Phenom Comp Saddle - Black

Size guide

Sit-bone width (mm)	Sit-bone width (in)	Saddle width (mm)	Saddle width (in)
up to 100	up to 3.94	130	5.12
101–120	3.98–4.72	143	5.63
121–140	4.76–5.51	155	6.1
141–160	5.55–6.3	168	6.61
161–176	6.34–6.93	180	7.09
177–195	6.97–7.68	200	7.87
196 and up	7.72 and up	225	8.86

Specialized: sit on a piece of cardboard on a chair with your knees at 90° (raise your feet if needed), stand up, mark the centre of each sit-bone impression and measure between the two dots. If a width isn’t made in a given model, Specialized’s size tool picks the nearest width that model comes in. A Specialized dealer can also measure your sit bones.

How to measure

Chest: around the fullest part, under the arms. Waist: around your natural waistline. Hips: around the fullest part. Keep the tape snug but not tight.

SizeSelect your size 143mm 155mm

Description

A mountain bike saddle designed for comfort and strength over long days on the trail: the long, flat Phenom shape with a carbon-reinforced Adaptive Edge shell whose flexible edges conform to your body, low-friction panels on the nose and tail, Level 2 padding and durable hollow Cr-Mo rails. For soft-tissue support, the Phenom Comp with MIMIC.