MK-SYN118B Brass Master Kit RSX 6 Speed (02-04) | MK-SYN118B

Synchrotech MK-SYN118B Brass Master Rebuild Kit

Refresh your 2002-2004 Acura RSX Type-S 6-speed transmission with the Synchrotech MK-SYN118B Brass Master Rebuild Kit. This kit is designed for RSX Type-S K20 manual transmissions using the dual-cone 3-piece 5th/6th gear synchro setup.

This master kit is a strong option when replacing worn synchros, sleeves, bearings, seals, and related transmission rebuild components during a K-series manual transmission service.

Brass synchros are a proven replacement choice for street cars, daily drivers, and K-series transmission refreshes where smooth, consistent shift engagement is the goal.

Features

• Genuine Synchrotech master transmission rebuild kit
• Designed for select Honda / Acura K-series 6-speed manual transmissions
• Brass synchro configuration
• Helps restore smoother shifting and improved gear engagement
• Recommended for transmission rebuilds, high-mileage refreshes, and performance K-series builds
• Professional transmission installation recommended

Vehicle / Transmission Fitment

• 2002-2004 Acura RSX Type-S K20 6-speed manual transmission
• Dual-cone 3-piece 5th/6th synchro setup
• Common transmission code search: X2M5

Important Fitment Note

Confirm transmission code, gear stack, synchro design, and 5th/6th gear synchro style before ordering. Honda and Acura K-series 6-speed transmissions can vary by year, market, and internal transmission configuration.

What's Included

Master kit contents are commonly listed as a 1-6 brass synchro set, 1-6 springs, 1/2/3/4/5/6 sleeves, shaft bearings, bearing clip, axle seals, input seal, and shift rod seal. Confirm final contents with the latest supplier data before installation.