2026 JET Motors Mongoose Stainless Steel LCB Exhaust Manifold – Classic Mini (A-Series)

All-new 2026 Mongoose Stainless Steel LCB Exhaust Manifold, engineered by JET Motors for maximum flow, durability, and power across the entire A-Series range.

Designed to fit all Classic Mini A-Series engines — from the humble 850cc right through 998cc, 1098cc, 1275cc, 1300cc, and even wild 1380cc+ builds — this Long Centre Branch (LCB) manifold delivers proven performance gains whether you’re building a fast road car, track weapon, or full race Mini.

At its core, the Mongoose LCB features precision mandrel-formed T304 stainless steel primary tubes, ensuring smooth, unrestricted gas flow with zero crush bends. This optimized layout improves exhaust scavenging, sharpens throttle response, and helps unlock extra horsepower and torque throughout the entire rev range.

The system is completed with CNC-machined 316L stainless “Merge” flanges, providing superior strength, heat resistance, and perfectly aligned transitions where it matters most. The result is a robust, race-inspired manifold that not only performs — but lasts.

Key Features

• Fits all Classic Mini A-Series engines: 850 / 998 / 1098 / 1275 / 1300 / 1380cc+
• LCB (Long Centre Branch) design for improved flow and power delivery
• T304 stainless steel mandrel-formed tubes for maximum performance and corrosion resistance
• 316L CNC “Merge” flanges for strength, precision fitment, and enhanced exhaust scavenging
• Designed for fast road, track day, and competition use
• Hand-finished, performance-proven construction
• Direct replacement performance upgrade for Classic Mini exhaust setups
• The 2026 Mongoose Stainless Steel LCB from JET Motors delivers modern engineering for the classic Mini.