CMI 300M Racing Swing Axles | VW Beetle & Ghia 1961–1966 | Short-Spline 26 11/16", Unbreakable (Pair)

CMI 300M Racing Swing Axles | VW Beetle & Karmann Ghia 1961–1966 | Short-Spline 26 11/16" (Pair)

Engineered for maximum launch. Guaranteed unbreakable. When "good enough" isn't an option for your '61–66 sedan, CMI Precision Machining delivers over-engineered swing axles designed to survive the violent torque of competitive drag racing.

Forged from aerospace-grade 300M steel, every axle is hand-polished and lapped to a 4 Max RMS finish to minimize friction and maximize longevity under extreme loads.

Vehicle Fitment

• VW Beetle & Karmann Ghia: 1961–1966 sedans (stock swing axle length, 26 11/16")

Why Choose CMI?

CMI Precision Machining builds these axles as over-engineered masterpieces, backed by a guarantee against breakage under normal racing use — with premium hardware included, not hardware-store bolts.

Key Features & Benefits

• Race-Ready Threads: Specialized J-Thread with a 0.3mm root radius, engineered to distribute stress and prevent fatigue failure during hard launches.
• Corrosion Protection: Black Oxide finish provides a durable barrier against rust and wear.
• Premium Hardware Included: Heat-treated 17-4 stainless steel thrust washers and nickel-plated 4340 flanged castle nuts (54–56 HRC).

Technical Specifications

• Material: Aerospace-grade 300M steel
• Axle Length: 26 11/16" (stock swing axle)
• Fitment: 1961–1966 sedan models
• Surface Finish: Black Oxide; hand-polished/lapped to 4 Max RMS
• Thread Spec: J-Thread with 0.3mm root radius
• Thrust Washers: (2) 17-4 stainless steel (heat-treated to H900)
• Castle Nuts: (2) 4340 nickel-plated (heat-treated to 54–56 HRC)
• Sold As: Pair

Frequently Asked Questions

• Are these really unbreakable? CMI backs these 300M aerospace-grade axles with a guarantee against breakage under normal racing use.
• What hardware is included? Heat-treated 17-4 stainless thrust washers and nickel-plated 4340 flanged castle nuts (54-56 HRC) — no need to source separately.
• Will these fit my 1968 IRS Beetle? No — these are stock-length swing axles for 1961-1966 sedans only. IRS cars use a different axle entirely.
• What's the thread spec? Race-ready J-Thread with a 0.3mm root radius engineered to resist fatigue failure under hard launches.

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