Canfield Brothers may be best known for its big hit trail bikes. But the Washington-state based company also makes some pretty fun hardtails. This week the 'Bros announced the fourth generation of their steel Nimble 9 Boost 29er hardtail featuring boost hub spacing and updated geometry.

Frame color options include sparkle metallic black, blue, green, or bronze.

Frame color options include sparkle metallic black, blue, green, or bronze.​

The Nimble 9 Boost combines the much-loved ride quality of a steel frame with a slack 66.5-degree head angle and stubby chainstays adjustable down to 413mm via sliding dropouts, making it a likely candidate for singlespeed duty. Reach is stretched by more than an inch on all sizes for a roomier cockpit, and seat tubes are shortened for increased maneuverability when riders drop the saddle.

Frames are available in S, M, L and XL, and sell for $749.

Frames are available in S, M, L and XL, and sell for $749.​

"The Nimble 9 is more versatile than ever," said Lance Canfield, owner and designer. "Whether you're a masochist who wants to build a singlespeed or bikepacking rig, or you just want keep it real with an aggressive all-mountain steel hardtail, this bike can do it."

Nimble 9 Boost Features

  • 2.5" tire clearance
  • 4130 chromoly steel frame
  • Increased reach and shorter seat tube
  • 66.5° head angle w/ 140mm fork
  • Custom sliding boost 148mm x 12mm rear dropouts, axle included
  • Adjustable 413mm-429mm chainstays
  • Singlespeed-able
  • Stealth cable routing
  • Sparkle metallic painted finish
  • ED black treated for superior anti-corrosion resistance
  • Removable direct mount front derailleur block
  • Two water bottle bosses

Tire clearance is rated at 2.5".

Tire clearance is rated at 2.5".​

Available in sparkle metallic black, blue, green, or bronze in S, M, L and XL, the Nimble 9 Boost frame sells for $749 at www.canfieldbrothers.com.