Insane Shafts

Rear CV Axle

$575.00

SKU: IS-303

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Insane Shafts IS-303 represents a significant upgrade for the 1994-2005 Mazda Miata, offering a high-performance rear CV axle solution. Built from robust Chromoly steel, these axles undergo a proprietary annealing and heat treatment process, enhanced further by cryogenic treatment to maximize strength and durability. Engineered to reliably handle substantial power, the IS-303 is rated for up to 500 wheel horsepower. This makes them a suitable choice for performance-oriented vehicles. The axles come equipped with features such as removable ABS rings and new spindle nuts, ensuring a comprehensive replacement. Insane Shafts positions these axles as a superior alternative to standard swap axles, emphasizing their real-world testing and proven performance under extreme conditions, whether on or off the track.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandInsane Shafts
Part NumberIS-303
CategoryDrivetrain

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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