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New Stem, Cranks, Zipp Vuma and SRAM XX Rings and Bottom Brackets from Rotor

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Rather than wait for the Fall tradeshows, Rotor has released an updated component selection comprised of cranksets, bottom brackets and new Q-ring elliptical chainrings for Zipp’s Vuma Quad and SRAM’s XX cranksets.  Plus, they’ve gone ahead and leaked their 2011 S3X stem with a bit of info on some other upcoming components.

Shown above are the new 2010 Agilis cranks, redesigned for the mid-year release with a new axle and crank clamp design borrowed from their Cervelo Test Team proven 3D cranks.  This new version allows for conventional installation and increases rigidity by 17%.  All models, including the road (above) and mountain bike (after the break) versions will have the red spider.

The road Agilis cranksets will come with either 130 BCD or 110 Compact spiders and weigh in at 517g for the compact with 170mm arms (without BB or chainrings).

Hit more for MTB model specs, pics and the other goodies…


The mountain bike version will come in two spider options: XC2 (110/74 BCD) and XC3 (standard 104/64 BCD).  The XC2 weighs in at a claimed 542g w/o BB or rings.

Not shown is a new 165mm crankarm length option for Rotor’s 3D crankset. It’ll be available in July.


Matching the light weight of Zipp’s VumaQuad carbon crankset are these heavily machined elliptical Q-rings.  They’re available only as a 52-36t set, and only in black with ano red bolts.  140g for the pair.


If you’ve jumped on the 2×10 bandwagon with SRAM’s XX but want the pedaling characteristics of Rotor’s nontraditional rings, they’ve finally got you covered.  The XX-compatible rings will presumably with with the new X0, X9 and X7 and they weigh in at 96g for the 40-27t pair.  Also available is a 42-28t set for you mashers.  While the smaller pair does away with SRAM’s carefully calculated 1:1.5 gearing ratio, Rotor has made them somewhat aero and used updated tooth profiles and shift gates and pins, which they say will provide problem free shifting in any condition.


Rotor’s updated SABB (Self Aligning Bottom Bracket) has advanced new non-contact labyrinth seals with new outer cups to match the aesthetically pleasing BB1 (below).  The red ano matches the cranks’ spiders, and new wall thickness and design not only claim to increase rigidity and fatigue resistance, but the whole thing drops 10g from the 2009 model for a claimed weight of just 82g with ceramic bearings.

rotor-2010-bb1-bottom-bracketThe redesigned BB1 has new plastic endcaps to reduce deformation and lateral compression, which keeps the axle its holding stiffer for crisper shifting.  Both the BB1 and SABB were tested under the Cervelo Test Team last year, and the BB1 is available in both road and MTB versions.


Rotor’s new Press-Fit BB bearings offer a Shimano-compatible upgrade for BB30 frames.  Using ceramic bearings and their non-contact Labyrinth seals, they should offer smooth rolling with solid water, dust and dirt protection.


Rotor’s new S3X stem uses four Titanium bolts on the face clamp while the steerer tube clamp uses just one single oversized DTT bolt and insert, a design which they’ve used and proven on their 3D crankset in hard racing conditions.  Weighing in at just 98g for the 90mm, the stem is certified to EN 14766 safety standards and claims to be very rigid and strong.  It’s available in sizes ranging from 70 to 130mm for oversized 31.8 handlebars.  +/- 6º.

Not shown is a new S3X handlebar that is built of Hi-Mod, UD carbon fiber with a titanium “chain mail” reinforcement at the stem and bar-end clamp zones.  It’s a flat bar, 580mm wide with 5º bend.  Weight is 120g. Oversized 31.8 clamp area only.  It should be available by Eurobike in late August.

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