U Bolts for Vehicle

IMPROVE GRIP, HANDLING & PERFORMANCE.

Nolathane U-bolts are engineered to securely clamp the leaf spring pack to the vehicle’s axle, ensuring stable suspension operation and consistent load distribution. Over time, factory U-bolts can stretch, corrode or lose clamping force, causing the leaf springs to shift under load. This movement leads to poor handling stability, axle misalign... Read more

Nolathane U-bolts are engineered to securely clamp the leaf spring pack to the vehicle’s axle, ensuring stable suspension operation and consistent load distribution. Over time, factory U-bolts can stretch, corrode or lose clamping force, causing the leaf springs to shift under load. This movement leads to poor handling stability, axle misalignment, premature wear and increased stress on suspension components. Nolathane U-bolts provide a strong, reliable solution that maintains correct alignment and reinforces overall suspension integrity.

These components are essential for vehicles that tow, carry heavy loads or operate in off-road conditions where the leaf spring assembly is exposed to high levels of stress. By providing dependable clamping strength, Nolathane U-bolts help ensure the suspension performs predictably and safely.

Why Choose Nolathane?

Nolathane U-bolts are manufactured from high-strength materials designed to withstand heavy loads, repeated suspension travel and harsh environmental conditions. Their robust construction ensures long-term clamping force, resisting stretch and distortion even under demanding driving scenarios.

Designed to support both factory and upgraded leaf spring setups, Nolathane U-bolts deliver dependable performance across daily driving, touring, towing and off-road environments. Paired with Nolathane’s polyurethane bushes and leaf spring components, they help maintain consistent alignment and improve suspension reliability.

Nolathane U-Bolt Range

U-Bolts: Heavy-duty fasteners engineered to securely clamp the leaf spring pack to the axle, maintaining proper alignment and supporting stable suspension operation.

Together, these components form a critical link in leaf spring suspension systems, ensuring strength, safety and long-term durability.

What This Upgrade Improves

Upgrading to Nolathane U-bolts improves suspension stability by ensuring the leaf spring pack remains firmly attached to the axle throughout suspension movement. Drivers will experience better load handling, reduced axle shift, improved braking stability and more predictable vehicle behaviour. Proper U-bolt clamping also helps prevent premature wear in the leaf springs and surrounding components.

In real-world applications, such as towing, carrying heavy loads, off-road driving or long-distance touring, Nolathane U-bolts provide consistent strength and reliability, maintaining critical alignment and protecting the structural integrity of the suspension system.

Compatible Vehicles

Nolathane U-bolts are suitable for a wide range of vehicles equipped with leaf spring suspension systems.

Passenger cars (leaf spring variants)

4x4s

SUVs

Utes

Light commercial vehicles

Fitment varies by axle width and spring design, but U-bolts are commonly used across many popular leaf-sprung platforms.

Shop Nolathane

Explore Nolathane’s premium U-bolts engineered for durability, strength and long-lasting suspension support. Designed to withstand demanding load conditions and harsh environments, these components offer a reliable upgrade for restoring or reinforcing leaf spring assemblies. Whether maintaining a workhorse, preparing a touring 4x4 or refreshing a suspension rebuild, Nolathane U-bolts deliver dependable performance built to last.

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4 Items

  1. Universal U Bolts - ID=45mm, L=175mm, Thread=M12 - square top
    In Stock
    Ships within 24hrs.
    Ships within 24hrs.
    SKU: 47802

    Universal U Bolts - ID=45mm, L=175mm, Thread=M12 - square top

    ℹ️ ID=45mm, L=175mm, Thread=M12 - square top
    Improves steering, corner precision, and driving experience; the best, replacement upgrade. Includes:
    In Stock
    Ships within 24hrs.
    Ships within 24hrs.
    Qty Required 2
    Kit Contents 2 Bolts, 4 Washers, 4 Nuts
    $47.80
  2. Universal U Bolts - ID=50mm, L=175mm, Thread=M12 - square top
    In Stock
    Ships within 24hrs.
    Ships within 24hrs.
    SKU: 47803

    Universal U Bolts - ID=50mm, L=175mm, Thread=M12 - square top

    ℹ️ ID=50mm, L=175mm, Thread=M12 - square top
    Improves steering, corner precision, and driving experience; the best, replacement upgrade. Includes:
    In Stock
    Ships within 24hrs.
    Ships within 24hrs.
    Qty Required 2
    Kit Contents 2 Bolts, 4 Washers, 4 Nuts
    $51.93
  3. Universal U Bolts - ID=58mm, L=270mm, Thread=M12 - round top
    Pre-Order
    Available for Preorder. Stock due on 22/9/2025.
    Available for Preorder. Stock due on 22/9/2025.
    SKU: 47804

    Universal U Bolts - ID=58mm, L=270mm, Thread=M12 - round top

    ℹ️ ID=58mm, L=270mm, Thread=M12 - round top
    Engineered to be long-lasting and resistant to oil, heat, and road contaminants; the best, replacement upgrade. Includes:
    Pre-Order
    Available for Preorder. Stock due on 22/9/2025.
    Available for Preorder. Stock due on 22/9/2025.
    Qty Required 2
    Kit Contents 2 Bolts, 4 Washers, 4 Nuts
    $57.92
  4. Universal U Bolts - ID=65mm, L=270mm, Thread=M12 - round top
    In Stock
    Ships within 24hrs.
    Ships within 24hrs.
    SKU: 47805

    Universal U Bolts - ID=65mm, L=270mm, Thread=M12 - round top

    ℹ️ ID=65mm, L=270mm, Thread=M12 - round top
    Minimises vibrations and harshness while delivering better responsiveness and feedback; the best, replacement upgrade. Includes:
    In Stock
    Ships within 24hrs.
    Ships within 24hrs.
    Qty Required 2
    Kit Contents 2 Bolts, 4 Washers, 4 Nuts
    $60.56

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