Rotor REX 3.3 XC3 MTB Crank BCD 104/64 3x9/10

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Description of Rotor REX 3.3 XC3 MTB Crank BCD 104/64 3x9/10

The Rotor REX 3.3 XC3 crank continuous to lead the 24mm crank market in terms of performance and rigidity. It is one of the first cranks which have been designed with the input of a pro cycling team, proven by world champion titles. The "Closed Clamp Concept" has a left hand crank axle clamp saves weight and improves stiffness, while its trinity drilling system crank arms offers unsurpassed rotational and longitudinal bending resistance. Rotor's axle systems has been specifically developed for multiple BB systems. In addition Rotor has extended the compatibility of the REX 3.3 XC3 because now it's featuring an improved ultra stiff 24mm steel UBB axle.

The "UBB System" is not a standard. It's all standards because it allows the installation of almost any 24 or 30mm Rotor axle crank on your bike, regardless of its BB type.

Note: You will find a compatibility chart under "attachments"! Basically the REX 3.3 XC3 crankset can be used with any standard Shimano-compatible bottom bracket cups for 24mm spindles.

Utilizing a special manufacturing process, named the “Trinity Drilling System,” an extruded aluminum bar is intricately CNC machined with three drilled holes through the length of the crank. The result is a unique triple hollow crank arm that enables Rotor to remove the excess aluminum in the core while still maintaining the structural strength of the crank.

REX 3.3 crank utilizes a 4-arm spider with 104/64mm 3-speed BCD. So it can be used with Rotor QX-Rings (not included in delivery), but can also be used with any standard chainrings for 104/64mm standard bolt circle.

Third generation of DTT (Double Thread Technology) technology in the left crank clamping system. REX 3 cranks have conventional assembly method but uses 3rd Gen DTT bolts which guarantee a reduction of stress rizers in the clamping area.

Q-factor: 169mm, chainline: 49,5mm

Symbolic picture: The picture shows the crank inclusive chainrings, while the delivery includes only the crank.
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Fact Sheet of Rotor REX 3.3 XC3 MTB Crank BCD 104/64 3x9/10

Product Name: Rotor REX 3.3 XC3 MTB Crank BCD 104/64 3x9/10
Manufacturer: Rotor
Item Code: ROT165271
Year: 2016
Material: 7075 T6 aluminium, steel axle
Weight: approx. 557 gram (at 170mm crank arm length, without BB and chainrings)
(manufacturer's specs)
Color: black anodized
Fitting for derailleur: 3x9/10-speed
Axle profile: integrated 24mm steel axle
Bolt Circle (mm): 104/64mm
Chainline: 49,5mm
Q-Factor: 169mm
Included in delivery: without bottom bracket cups and chainrings
crank, aluminium chainring bolts, spacer
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Rotor REX 3.3 XC3 MTB Crank BCD 104/64 3x9/10
Delivery time 2-4 daysCrank arm length: 170mm
in stock, delivery time 1-3 daysCrank arm length: 172,5mm
in stock, delivery time 1-3 daysCrank arm length: 175mm
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Bottom Bracket Compability Chart Bottom Bracket Compability Chart (249 kBytes) ROTOR Bike Components
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