Feature(may vary by option.)

●110BCD, 4 Arms, Chain 9 10 11 12 Speed, Support Crankset R9100 R8000 105 R7000
●Optimized tooth design, low noise, anti-drop Self-clean from muddy soil
●USA Aluminum 7075 High Rigidity - Precision CNC Machined 7075 T651 Aluminum from USA Aleris / Alcoa Built to last HB150 Superior Rigidity, 4mm Thick, Anodized Black
●LIGHTWEIGHT - Inside cut-off design for rigidity, lightweight weight 46-163g. Processing: Anodized aluminum with 4 bolts included
●30,000 km lifespan of many professional track riders in Europe


Description

Stone Round Chain Ring for R7000 R8000 R9100 Narrow Wide Single Speed 110BCD

This is a 110BCD 4 Arm Chain Ring Support 9-12 Speed Chain. Support Crankset Dura Ace R9170 R9150 R9120 R9100 Ultegra R8070 R8050 R8020 R800 105 R7025 R7000

Made of high quality USA aluminum 7075 and precision full CNC process. State Design Art from Stone Company We offer you the best quality and riding experience.

Features

• 110BCD, 4 Arms, Chain 9/10/11/12 Speed, Support Crankset R9100 R8000 105 R7000
• Optimized tooth design, low noise, anti-drop Self-clean from muddy soil
• USA Aluminum 7075 High Rigidity - Precision CNC Machined 7075 T651 Aluminum from USA Aleris / Alcoa Built to last HB150 Superior Rigidity, 4mm Thick, Anodized Black
• LIGHTWEIGHT - Lightweight and rigid design with inner cutout, weight 77-176g. Processing: Anodized aluminum with 4 bolts included
• 30,000 km lifespan of many professional track riders in Europe.

Teeth, maximum diameter (mm), weight (g)

34T, 146mm, 46g

36T, 154mm, 52g

38T, 162mm, 65g

40T, 169mm, 80g

42T, 178mm, 86g

44T, 186mm, 88g

46T, 194mm, 100g

48T, 202mm, 105g

50T, 210mm, 114g

52T, 219mm, 130g

54T, 226mm, 140g

56T, 235mm, 155g

58T, 242mm, 159g

60T, 250mm, 163g

About Stones

STONE Design Company is specialized in providing high quality innovative design CNC machined chainrings to clients worldwide loved by European race teams, providing customization ring with tooth quantity and style, adding the team logo or name base to the stone logo.

Material is all basics, Aluminum 7075-T651 supplied by Aleris and Alcoa USA, is the worlds leading aluminum supplier and Aleris is a supplier to many aircraft manufacturers.

Taiwan CNC machines provide 0.03mm process accuracy.

We are not only a factory but also a chain ring designer with cutting edge innovative designs. We want to provide our customers with a rigidity, lightweight, low noise, drop stop, and durable chainring.

Stone products meet all requirements of heavy duty cycling sports, downhill, CX, gravel, traction, etc. Please ensure that all chain rings have a lifespan of 30,000 km.