MASSI Shimano 12s 104 Bcd Kjettingring

Fordeler

• 104 BCD (4-bolt) compatibility with many legacy MTB cranks (e.g., older XT/SLX/Deore)
• 7075‑T6 aluminum construction; low stated weight (~47 g for 32T)
• Tooth profile advertised as Shimano HG+ 12‑speed specific (narrow‑wide style) for improved retention and shifting feel
• Clear bolt-length guidance for different tooth counts and bash‑ring use
• Sizes cover common MTB needs (32/34/36; some availability of 38T)

Ting å vurdere

• Limited independent testing and long‑term durability data for this exact Massi model
• Likely 0 mm offset (typical for 104 BCD) may not optimize chainline for Boost/Super Boost frames without spacers or crank-specific adjustments
• Compatibility constrained to Shimano HG+ 12‑speed chains; not intended for SRAM Eagle or non‑HG+ 12‑speed setups
• Marketing term “Drop‑Stop ST” is associated with another manufacturer; unclear validation of the exact tooth geometry implementation
• Size range does not include smaller 28–30T options in standard form; 30T requires specific threaded hardware
• Short warranty (1 year) compared with some competitors

Oppsummering & anbefalinger

A lightweight 7075‑T6 104 BCD chainring aimed at Shimano HG+ 12‑speed users on legacy 4‑bolt cranks. It covers common tooth counts and provides clear hardware guidance, but lacks broad third‑party validation and offset options. Suitable as a functional HG+‑specific replacement for 104 BCD setups, with trade‑offs in verified durability, chainline tuning for Boost frames, and cross‑brand chain compatibility.

Bruksområder & tips

Best suited for riders running older 104 BCD cranks who have upgraded to Shimano 12‑speed HG+ drivetrains and need a lightweight single‑ring for XC/trail/enduro. Not ideal for SRAM 12‑speed users or bikes requiring offset‑specific rings to dial chainline (Boost/Super Boost) without additional adjustments.