GR2 Titanium Exhaust Bellows

GR2 Titanium Exhaust Bellows are thin-wall, multi-ply corrugated flex elements engineered to absorb thermal expansion, vibration, and misalignment in high-performance exhaust systems. Grade 2 titanium offers an excellent balance of corrosion resistance, formability, and weight reduction compared to stainless steel, helping improve throttle response and reduce stress on welds and flanges.

• Lightweight performance: Up to ~45–50% lighter than stainless bellows assemblies
• High-temperature resilience: Stable operation under continuous exhaust heat cycles
• Corrosion resistant: Excellent resistance to condensate, road salt, and corrosive exhaust byproducts
• Vibration isolation: Multi-ply construction for superior fatigue life and reduced NVH
• Flow-optimized: Smooth, tapered liners available to minimize turbulence and backpressure
• Customizable: Diameter, effective length, ply count, end fittings, and liners to suit your system

• Nominal diameter: 2.5", 3.0", 3.5" (other sizes on request)
• Overall length: 100–300 mm typical; custom lengths available
• Effective bellows length: 60–200 mm
• Ply construction: 2–3 ply Grade 2 titanium (typical ply thickness 0.15–0.30 mm)
• End connections: Titanium tube ends, V-band ferrules, slip joints, or flange stubs
• Liners: Internal sleeve or interlock liner (titanium) to protect bellows from exhaust stream
• Tolerances: OD ±0.30 mm, length ±1.0 mm (typical); tighter on request

• Single or multi-convolution profiles optimized for axial and lateral movement
• Internal interlock or smooth liner to reduce noise and protect the bellows
• External braid or braidless design (titanium braid optional; stainless braid available on request)
• Stop rings/limiters for controlled travel and enhanced fatigue life

• Axial movement: ±5–15 mm depending on size and convolution count
• Lateral/Angular movement: Application-specific; provided with design review
• Temperature: Suitable for typical exhaust temperatures; consult for continuous >650°C zones
• Pressure: Designed for low positive exhaust backpressure; burst/pressure test data available on request

• Weld quality: Argon back-purged TIG welding; visual and, on request, dye penetrant testing
• Dimensional checks: OD/ID, length, concentricity, and end connection fit
• Leak test: Helium or air pressure leak testing available

• Positioning: Install close to heat sources as needed but ensure sufficient support; avoid torsion loading
• Alignment: Maintain proper axial alignment and use correct hanger geometry
• First heat cycle: Re-check clamps/V-bands after initial run; inspect for leaks
• Cleaning: Mild detergent only; avoid harsh chemicals to preserve titanium surface

• Turbo downpipe flex joints and mid-pipes
• Cat-back systems for track and street cars
• Motorcycles and time-attack builds requiring maximum weight savings
• High-vibration exhaust sections on performance engines

• Common sizes in stock; custom configurations typically 7–15 working days

    Ordering Information
    Please specify:

• Diameter, overall length, and effective bellows length
• Ply count and ply thickness
• End connection type (tube ends, V-band, slip joint, flange stub)
• Liner option (smooth or interlock) and need for external braid
• Operating conditions (temperature, expected movement, pressure)
• Quantity and target delivery date

Share your drawings or installation measurements, and we'll prepare a tailored quotation, lead time, and inspection plan.

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