Shimano Sora R3030 9 Speed Triple ChainsetAll set for taking you from A to B on your road bike, this 3×9 speed crankset uses a high-end 4-arm design and compact 50-39-30T chainrings. It features a tough aluminium crank arm material with a steel axle, making it ideal at handling the increased pressure from fitness riding and longer journeys. Shimano has also equipped this version with its renowned Hyperglide sprockets that incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. This results in fast and responsive indexed shifting as you travel from the smooth city pavement to the countryside. One final highlight is this model’s 2-piece crank design that offers increased rigidity and less weight.Features:Crank Arm Material: AluminiumCrank Axle Material: SteelChainring Material: Large: Aluminium; Middle: Steel and Small: SteelUse: Road, FitnessUse: Road, FitnessSpeed: 9 speedNumber of Chainrings: 3Series: SoraBB Shell Width: 70mmBB Included: No2-piece Construction: YesChainline: 43.5mmChain Ring Combination: 50, 39 and 30TCompatibile BB Type: OutboardCompatible Chain: HG 9 speedCrank Arm Length: Multiple options available to selectGear Arms: 4Chain Guard / Bash Guard: Sold separatelyBCD: 110/74mmRecommended Bottom Bracket: Pressfit: BB-RS500-PB; Threaded (Normal): BB-RS500Q-Factor: 158.8mmPart Numbers: 170mm: FCR3030C090; 165mm: FCR3030A090 and 175mm: FCR3030E090Weight: 1180g (without bottom bracket)Technologies:2-Piece Crankset: Integrated crank arm and bottom bracket. Increased rigidity with less weight. Wider bearing positioning. Rigidity is enhanced and pedaling force is efficiently transmitted. Precision Bearings. Low maintenance and simplified installationHG HyperGlide: The distinctively designed HYPERGLIDE sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. The HG cassette sprocket, which was developed for the MTB 10-speed system, underwent comprehensive optimization to achieve super-highly efficient shifting.A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.