Stone 82bcd Bike Chainring for Fsa Alpha Drive Gamma Pro Marlin 7 Mtb Narrow Wide Chainring 30t-42t Round Mountain Bike Bicycle

Stone 82BCD Round Narrow Wide Chainring for FSA Alpha Drive / Gamma Pro / Marlin 7 MTB 30T-42T

The STONE 82BCD Round Narrow Wide Chainring is designed for FSA Gamma Pro and FSA Alpha Drive 1x cranksets, and is also suitable for Marlin 7 MTB bikes equipped with compatible cranksets.

Made from high-strength 7075-T651 aluminum alloy, this chainring features precision CNC machining and a black anodized finish for excellent stiffness, durability, and lightweight performance.

It is available in 30T to 42T options and is designed for 1x drivetrain systems only.

Features

• 82BCD round chainring
• Designed for FSA Gamma Pro and Alpha Drive 1x cranksets
• Suitable for Marlin 7 MTB
• Narrow-wide tooth profile for improved chain retention
• Made from high-strength 7075-T651 aluminum alloy
• Precision CNC machining
• Black anodized finish
• Designed for 1x drivetrain systems only

Specifications

• Brand: Stone
• Product Type: Round Narrow Wide Chainring
• BCD: 82BCD
• Tooth Options: 30T / 32T / 34T / 36T / 38T / 40T / 42T
• Material: High-strength 7075-T651 aluminum alloy
• Material Hardness: HB150
• Thickness: 4 mm
• Color: Black anodized
• CNC Precision: 0.03 mm
• Surface Treatment: Anodized, high-speed CNC machining

Compatibility

Fits:

• FSA Gamma Pro 1x crankset
• FSA Alpha Drive 1x crankset
• Marlin 7 MTB with compatible crankset

Chain Compatibility

• MTB chains: 9 / 10 / 11 / 12 speed
• Road chains: 9 / 10 / 11 speed

Default version is not compatible with SRAM AXS 12-speed chains.
If you need compatibility with SRAM AXS 12-speed, customization is available.

Important Notes

• This chainring is designed for 1x drivetrain systems only
• Not compatible with 2x or 3x systems
• Does not support front derailleur shifting
• Please confirm your crankset uses 82BCD before placing an order

Size and Weight

• 30T – Max Diameter: 130 mm – Weight: 50 g
• 32T – Max Diameter: 138 mm – Weight: 56 g
• 34T – Max Diameter: 146 mm – Weight: 59 g
• 36T – Max Diameter: 154 mm – Weight: 61 g
• 38T – Max Diameter: 162 mm – Weight: 68 g
• 40T – Max Diameter: 170 mm – Weight: 74 g
• 42T – Max Diameter: 178 mm – Weight: 81 g

Advantages

1. Made from high-strength 7075-T651 aluminum alloy for excellent stiffness and durability
2. Manufactured with high precision CNC machining at 0.03 mm accuracy for reliable performance and precise fit

Package Includes

• 1 x Chainring
• 4 x Bolts