Sale: $ MSRP: $


Important Shipping Note: U.S. sales only.


The Piranha SP 2 is a super light racing shoe for the advanced runner. The SoLyte midsole and Magic sole provide more cushioning than usually found in this light of a shoe. The upper is minimalistic with welding instead of overlays to further reduce weight.

Model Number:

Important Shipping Note: U.S. sales only.

Width D=Medium

How It Fits

  • Sizing: Standard running shoe length
  • Heel: Medium to narrow
  • Mid-foot: Medium volume
  • Forefoot: Medium width
  • Toe-Box height: Low
  • Arch structure: low

Weight: 4.2 oz (size 9)

Midsole Height: Heel (14mm), Forefoot (10mm)

Sizing is based on the men's scale. Women should subtract 1 and a half sizes from their women's shoe size. Example Women's 8.5 equals size 7.0 for this shoe

Product Lifecycle

  • Release date: June 2007
  • Model discontinued: December 2009
  • Model update: January 2010, Pirahna SP 3
  • Heritage: Pirahna SP

Pronation Control Technology

Designed for neutral pronation & supination

  • Midsole: Very low profile, single- density SoLyte
  • Shape: Semi-curved
  • Construction Last: Slip lasted

Cushioning Technology

  • Midsole: Full-length SoLyte
  • Heel: Nothing added
  • Forefoot: nothing added

Upper Materials

  • Lightweight open mesh with welded support minimizes weight, Ecsaine lining allows for barefoot comfort

Outsole Technology

  • Magic Sole minimizes weight and maximizes breathability

The Piranha SP 2 is a minimum featured shoe engineered for neutral or supinating runners. This racing flat has a semi-curved shape.

Footwear Performance Characteristics

Pronation Control: What's This?

  • Neutral
    • Min
    • Mod
  • Support
    • Min
    • Mod
    • Max
  • Motion Control
    • Mod
    • Max

Heel-Toe Offset (mm): What's This?

  • 0
  • 1-2
  • 3-4
  • 5-6
  • 7-8
  • 9-10
  • 11+

Stack Height:

  • Barefoot
  • Minimal
  • Low
  • Medium
  • High
  • Maximal


  • Road
  • Road-Trail
  • Hard Trail
  • Varied Trail
  • Soft Trail

Shoe Type:

  • Premium
  • Standard
  • Performance
  • Racing

Customer Reviews

Comments: Great shoes! Loved them so much I bought a couple more pairs. First pair of shoes I've ever worn that actually MADE me improve my form. No knee pain and pain from plantar faciitis almost gone.
From: Tony, Fairfax, VA, USA

Comments:  Wonderful shoes. Amazingly light. Running in them is a bliss. It is sometimes difficult to smooth the tongue out because the material is very thin. However, that is the only niggle I have with these shoes. They breathe very well. I usually do not like wearing shoes without socks, but I do wear these without them and my feet hardly sweat in them. I would highly recommend these shoes to anyone who wants to get away from the overly cushioned expensive running shoes.
From: Csaba, Los Alamos, NM USA

Comments:  I own 2 pairs of these shoes. It's the lightest shoe I've ever had. Perfect for people who are looking to simulate almost barefoot or minimalist running but afraid of broken glass on the road. Perfect for runners who use POSE method. Very breathable and flexible.
From: Noel, Jacksonville, FL, USA

Comments: I love the feel of the shoe it is very light and flexible. i consider myself a minamilst runner so I run in this shoe every day witch is about 50 miles a week.
From: Sam, Bellingham, WA, USA

Comments: Love it. I have put in 120 miles a week in this shoe. It is very light.
From: Frank, Eugene, OR, USA

Comments: Possibly the best racing flat ever to be publicly available. This flat is ultra-lightweight, super-flexible, and very breathable. Perfect for almost any distance for very lightweight runners like myself. Once again, another awesome flat from ASICS.
From: Peter, Conway, New Hampshire, United States