HollowGram SiSL2 with OPI SpiderRing: The evolution of the revolution. Cannondale Hollowgram SI SL BB30 MTB Crank Arms 104 BCD 170mm Crankset PF30 You probably know that these are some of the nicest cranks in existence. CHL The most current evolution of the HollowGram, the SiSL2 continues this tradition of radical innovation. You're better off buying a SRAM offering. SiSL2 and Si Cranksets. Cannondale's engineers revised the Hollowgram crank design, enlarging the core pocket, trimming weight and retaining the cranks' trademark stiffness. Expect to pay a premium for the Hollowgram SL or Hollowgram SI, especially in size 170mm. Cannondale’s own Hollowgram hubs ensure smooth rolling and fast engagement. We haven't seen any failures yet and you can find them reasonably priced from your retailer or on Ebay as well. But it’s the lack of weight that takes your breathe away. These are still used on many Cannondale bikes because they offer unprecedented performance compared to the competition. Cannondale Road Hollowgram SiSL2, Hollowgram Si, and Cannondale Si crank spindle spacer set. The Cannondale SuperSix Evo Ultegra was selected for an Editor’s Choice award in 2020. I have the hollowgram SI mountain arms and spindle coming from a Scalpel 2017. The oversized crankarms convey a sense of purpose and the 10 arm chainring design, apparently inspired by race car wheels, lends the crankset a delicate presence. I have the bike built with mountain crankset and derrailleurs (sram x5). The bike has a 68mm, PF30 bottom bracket shell, as a gravel bike, this has a Road shell. I definitely prefer the aesthetic of the Hollowgram spiderings over any other crank design and just realised that my frame came with the BB so buying a BB30 specific system makes installation much easier. 13 years ago, the original Cannondale HollowGram crank started the BB30 revolution and set a new standard for ultra-light, super-stiff cranks. I have never ridden either so am after a standard. My only gripe is the complete SI crankset only comes in semi compact or compact. Kit includesNon drive 7.5mmNon drive 5.5mmNon drive 2.5mmDrive side 5.6mmDrive side 2.6mmTwo bearing shieldsSee diagram for proper spacer sizes for your bike. HollowGram Si Cranks; HollowGram System Integration cranks are stiff, light, and modular, featuring one-piece direct mount chainrings. Simply the lightest, stiffest, bad-ass-est cranks ever to be bolted onto a mountain bike, the HollowGram SiSL2 represents the latest evolution of the crank that started the BB30 revolution. There was the old Hollowgram, back then they didn't call the BB interface BB30 but SI, then for the 2008 model year, they replaced the Hollowgram by the Hollowgram SL. SAVE Micro-Suspension Supposedly, Cannondale did not have any problems with the three piece Carbon SI crankset. At 35mm deep, the rims of the Hollowgram Si Wheelset sit beautifully between aerodynamic and responsive, providing the handling of shallow depth rims but still offering improved aerodynamic efficiency out on the road. HollowGram. Cannondale's Hollowgram Si wheelset does affect rotational mass, and the 25mm external, 19mm internal and 35mm tall carbon rims come with Stan's No Tubes rim tape. When you lift the Hollowgram SiSL2 chainset out of the box, nothing quite prepares you for how little it weighs. The SL has slightly revised arms with more material machined off from the inside, the arms are shorter after the pedal threads and there is a shaving around the arm mounting bolts. Here are some more details: In 2008. Problems with the three piece Carbon SI crankset only comes in semi compact compact... Priced from your retailer or on Ebay as well Hollowgram SiSL2, Hollowgram SI, and modular, one-piece. 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