- Order number: KB.SH.0020
absoluteBlack Chainrings Oval Road Shimano 4-Bold 38Z AbsoluteBLACK is a cycling... more
Product information "absoluteBlack Chainrings Oval Road Shimano 4-Bold 38Z"
absoluteBlack Chainrings Oval Road Shimano 4-Bold 38Z
AbsoluteBLACK is a cycling company devoted to extraordinary design, European manufacturing and production of parts that not only perform great, but also last long.
We believe anything out there can be made better, including chainrings. We're obsessive and driven. We made it our goal to improve riders pedalling efficiency by changing the way how torque from the crank is delivered to rear wheel. This is how absoluteBLACK oval chainrings found its way to general market and gained Worldwide recognition.
We are passionate about every step of the production cycle. It starts from material sourcing where we only pick the very best aluminium alloy we can find for our chainrings. Such selection makes our products stronger and more durable from the very beginning. We use cutting-edge 3D CAD software that give us the freedom to create beautiful yet remarkably rugged parts that are made to last.
Size (Weightt +/-1g) 34T (31g), 36T (37g), 50T (120g), 52T (137g)
Material CNC milled 7075 alloy
Ovality Optimized to each size separately. 34T- 6.5% ; 36T- 11.4%, 38T- 11.4%, 50/52 - 10.3% ; Timing of 108 -109.5° after TDC (top dead center) - Ideal for road climbing. Patent Pending
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