Mastodon GM Chrome 1" Bore Finned Master Cylinder 9/16" & 1/2" Ports – Tandem

Chrome aluminum tandem master cylinder with 1" bore — the universal upgrade for any classic muscle build that wants modern braking performance and the show-quality looks of a finned chrome top. The 4-port design (9/16" + 1/2" outlets on both sides) lets you route brake lines from whichever side suits your chassis layout, without compromise.

Compatible with disc/drum, drum/drum, or disc/disc brake systems. Plugs are included to block the unused ports.

Specifications:

• Bore: 1.0"
• Outlet ports: 9/16" + 1/2" on both sides (4 ports total)
• Mounting: 3-3/8" centre-to-centre stud pattern
• Finish: Chrome aluminum body, finned chrome top
• System compatibility: Disc/disc, disc/drum, or drum/drum
• Includes: Master cylinder, finned chrome cap, port plugs