On off.road.cc, find the article detailing SRAM's 2025 mountain bike drivetrains. Identify the publication date. Then, describe the key differences between the Eagle 90 and Eagle 70 systems, specifically regarding their availability, chainring material, and chain type.
Navigate to 'off.road.cc'. Locate and open the article titled 'SRAM MTB drivetrains 2025: SX to XX SL Transmission explained'. Identify and note the publication date of the article. Scroll through the article to find the 'Eagle 90 Transmission' section. Extract details about Eagle 90's availability, chainring material, and chain type. Scroll through the article to find the 'Eagle 70 Transmission' section. Extract details about Eagle 70's availability, chainring material, and chain type. Synthesize the gathered information to highlight the differences between Eagle 90 and Eagle 70.
Successfully navigate to the article 'SRAM MTB drivetrains 2025: SX to XX SL Transmission explained'. State the publication date of the article as 'Jun 10 2025'. Accurately describe the availability of Eagle 90 as 'Aftermarket' and Eagle 70 as 'OEM only'. Correctly identify the chainring material for Eagle 90 as 'Stamped steel' and for Eagle 70 as 'Aluminum crankset with three-bolt T-Type chainring'. Correctly identify the chain type for Eagle 90 as 'Borrowed from GX T-Type' and for Eagle 70 as 'Its own Flattop chain with a polished steel finish and solid pins'.