MTB Bike Crank is Compatible with 1X 2X 3X 104BCD Deviation System

Material: Alu 6061 crank ,only 551g/set (1.28 lbs), Crank Bolts Included(4 sets).

3 Piece Chainrings Crank Design, fits for 9s/10s/11s, 1X/2X/3X MTB Crankset.

BCD:104mm,64mm;Chain Line: 49mm, Crank Arm Length: 170mm.

Color: Black

Standard BSA Bottom Bracket Crank Arm,compatible for 9/16 threaded Peal

Threaded hole,pedal size : 9/16" ,

Square Tpaer Bottom Bracket,BB not included

Taper Square 110.5mm/M8

Strong Design of Stiffener,45mm Wide Crank,Durable,Light Weight

Single Chainring Outer Diameter

Outer Diameter:

30T:127mm ,approx 0.06 lbs

32T:135mm , approx 0.09 lbs

34T:143mm , approx 0.11 lbs

36T:151mm , approx 0.12 lbs

38T:160mm , approx 0.15 lbs

40T: 168mm , approx 0.18 lbs

42T: 175mm , approx 0.2 lbs

light and flexible constrution

smaller diameter is easy to ride in climbing

one piece crank nut in chainring

Forged chainring nut decreases interfece between chain and chainring

front and reverse side

30T Narrow Wide Teeth Chain Ring Show

2 Type Rainbow Chainrings comparsion

Per customers suggestion,we especially developed this 32T forged Narrow Wide Chainring

Till now it is only applied for 32T Rainbow chainring

We will send the parcel randomly if you purchased 32T Colorful crankset

Normal 32T Rainbow Narrow Wide Chainring

Rainbow Chainring color will changes in different point of view

the real product is more attractive than what in the picture

Forged Crank Nut 32T Single Speed Chainring

Forged Chainring is our attempt, it does not have any effect on your riding

If you have better idea ,please inform of us ,we will try to make it in true

We appreciated your suggestion