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Sinz MX2 2-pc Cranks

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About This Product: Sinz MX2 2-pc Cranks


The Sinz MX2 2-pc Cranks are a great set up for the smaller riders of BMX.  The cranks provide stiffness that is needed to transfer power to the wheels instead of to flexing.  The cranks feature forged alloy arms, 24mm hollow chromoly spindle and a sealed outboard bottom bracket.  


•Forged alloy 2pc crank

•24mm chromoly spindle

•104 BCD spider for 4-bolt chainrings

•Sealed Euro outboard BB included
•Sand blast black anno finish

•Requires long (7mm) chainring bolts with most chainrings

•Required tools: BBT-9 (or similar) bottom bracket tool and 8mm Allen wrench


140mm (w/BB):  23.75oz (674g)

145mm (w/BB):  24.30oz (659g)

150mm (w/BB):  24.25oz (688g)

155mm (w/BB):  24.65oz (699g)

160mm (w/BB):  25.25oz (716g)

165mm (w/BB):  25.5oz (723g)

170mm (w/BB):  25.8oz (732g)

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.