Shipping in 3-5 working days
Free shipping to the Republic of Ireland
The Rotor 3D+ MAS is a specific crank for time trial and triathlon with aerodynamic spider based on the 3D+ crank. It's being both lighter and stiffer than the 3D crank with titanium axle. The crank arms of the Rotor 3D+ MAS are made of 100% cnc machined, 7055 aluminium which have been trinity drilled for a further weight reduction. Because of the cnc machined and black anodized surface the 3D+ MAS is featuring an attractive finish in contrast to other cranks. Rotor's axle systems has been specifically developed for multiple BB systems. In addition Rotor has extended the compatibility of the 3D+ MAS because now it's featuring an improved ultra stiff 30mm aluminium 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"! Furthermore the second picture shows which spacers (not included) are necessary for your specific frame-bottom bracket combination.
Furthermore this crank is equipped with the "MAS" (Micro Adjust Spider). This technology allows more options for a further optimized Q-Ring setup. MAS spiders have a secondary set of bolt holes that allow Q-Ring users to regulate their Q's with more accuracy by offering half increments between the normal "Optimum Chainring Position" settings.
This crank is manufactured using an improved version of Rotor´s proprietary "Trinity Drilling System" technology during manufacture. Due to the larger axle-crank contact area of a BB30 crank, all three holes can be drilled from the axle side of the crank arm, allowing further optimization of wall thicknesses. It improves both the weight and the weight-rigidity ratio of the crank arm.
The 3D+ MAS 130 crank can be used with Rotor Q-Rings (not included in delivery) and also with any standard chainrings for 130mm bolt circle diameter.
The hight specified justage of the cup pretension is achievable because of an compression ring with nut.
Q-Factor: 148mm, Chain line: 43.5mm