The Howler
FBM Howler Frame - Clear Metallic
Clear
FBM Howler Frame - Gem Green
Gem Green
The Howler frame features a SuperTherm top tube and down tube and a 3D laser cut 4130 Chomoly gusset to create a stronger and lighter frame.
FBM The Howler
FBM Machine Shop Tours
FRAME SPECS
Colors Clear, Gem Green
Top Tube Length 20-1/2", 20-3/4", 21"
Rear End Length 13-3/8" (slammed)
Bottom Bracket Height 11-7/8"
Head Tube Angle 75 degrees
Seat Tube Angle 71 degrees
Weight
The weight may vary slightly depending on minor variations in the powder coating process

4 pounds 8.5 ounces (20-1/2"tt)
4 pounds 9 ounces (20-3/4"tt)
4 pounds 10 ounces (21"tt)

Headtube Integrated Externally Machined, tapped for gyro tabs
Dropouts Heat treated 3/16" thick 4130 Chomoly for 14mm axles
Bottom Bracket Mid
Brake Options Seatstay 990's, Brakeless
Cable Guides and Stops Split guide and stop, (none with brakeless option)
Bridges Custom laser cut flat plate for seat stays and
a round tube for chain stays
Capped Stays Yes
Standover Height 7-3/4"
TUBING SPECS
Top Tube 1-3/8" O.D.
Double Butted SuperTherm
Down Tube 1-3/8" O.D.
Double Butted SuperTherm
Seat Stays 3/4” O.D.x 0.035" Wall
4130 Chromoly
Chain Stays 7/8” O.D.x 0.049" Wall tapered to 5/8" O.D.
4130 Chromoly
SuperTherm from True Temper is a proprietary superthermophillic (heat-loving) alloy, developed in partnership with the U.S. Steel Alliance. The composition of Chromium, Molybdenum, and Vanadium with an unprecedented 217 ksi ultimate tensile strength makes this alloy actually gain strength through a metallurgical transformation in the heat-affected zone as a result of welding or brazing. SuperTherm is highly temper-resistant, resulting in an 11% increase in fatigue life and a 20% increase in impact strength heat treated 4130. The increased mechanical properties of SuperTherm allow for incredibly strong, yet lightweight frame designs with that legendary feel of steel ride quality.
WARRANTY INFO