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Speedline Hollow Pro 2-Piece Cranks - 1
Speedline Hollow Pro 2-Piece Cranks - 2
Speedline Hollow Pro 2-Piece Cranks - 3

Speedline Hollow Pro 2-Piece Cranks

Speedline
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About This Product: Speedline Hollow Pro 2-Piece Cranks

The Speedline Hollow Pro 2pc BMX crank set features forged 7000 series aluminum arms with a built in 24mm oversized hollow chromoly spindle.  The 4-bolt 104BCD aluminum spider is replaceable and the arms include chromoly pedal boss inserts to insure strong pedal thread.

SPECS:
SPINDLE FIT: Designed as 2-pc crank, spindle included and built on to drive arm
MATERIAL: 7000 series aluminum, Hollow forged arms with 24mm hollow chromoly spindle
BOTTOM BRACKET: Includes Outboard 24mm bottom bracket
CHAINRING: Requires 4-bolt chainring (104mm bolt pattern)
PEDAL FIT: 9/16" (standard for 3pc cranks)
INCLUDES: Right and Left crank arms, spindle, outboard Euro bottom bracket and crank arm bolt.
 
Weight:
170mm: 34.65oz/982g (including bottom bracket and crank bolt)
175mm: 34.9oz/989g (including bottom bracket and crank bolt)

Crank Size Chart

Crank Size Chart
Inseam length Crank Length
Crank Size: Micro, Mini. Junior
Inseam length: 15 - 16 inch Crank length: 130 mm
Inseam length: 16 - 17.5 inch Crank length: 135 mm
Inseam length: 17.5 - 19 inch Crank length: 140 mm
Inseam length: 19 - 20 inch Crank length: 145 mm
Inseam length: 20 - 22 inch Crank length: 150 mm
Crank Size: Junior, Expert, Expert XL
Inseam length: 20 - 22 inch Crank length: 150 mm
Inseam length: 22 - 23 inch Crank length: 155 mm
Inseam length: 23 - 25 inch Crank length: 160 mm
Inseam length: 25 - 26 inch Crank length: 165 mm
Crank Size: Pro and Larger
Inseam length: 26 - 27 inch Crank length: 170 mm
Inseam length: 27 - 28 inch Crank length: 175 mm
Inseam length: 28 - 30 inch Crank length: 177.5 mm
Inseam length: 30 - 31 inch Crank length: 180 mm
Inseam length: 31 - 32 inch Crank length: 185 mm
Inseam length: 33+ inch Crank length: 190 mm

How To Measure Your Inseam

  1. Start with a pair of pants you already have that fit you well and lay them flat on the floor.
  2. Carefully measure the length from the crotch seam to the bottom of the leg.
  3. THIS NUMBER IS YOUR INSEAM. Use this number to help you choose your cranks.