45mm x 710mm Shackle Leaf Spring

SKU: N/A Category: Springs Shackle Tag: eye to eye srpings Brand: Manutec

45Mm Shackle Leaf Spring For Trailers And Caravans - 710Mm Long

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Price range: $55.75 through $109.25 Inc.GST

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45mm Shackle Leaf Spring for Trailers and Caravans – 710mm long

45mm shackle springs are replacement leaf springs for trailers, campers, and caravans.

This spring is centred with the locator pin is in the middle of the spring. This can be checked by measuring from the front eye to the locator pin and from the locator pin to the rear eye. For this spring, both measurements should be 355mm. If they are different, you likely require offset springs.

These springs are supplied painted, but you can find a galvanised version here.

Product Specifications: 45mm Shackle Leaf Spring for Trailers and Caravans – 710mm long

Width: 45mm
Length: 710mm
Leaf Thickness: 8mm
Free Camber: 120mm
Spring Bolt Holes: 9/16″
Leaf Ratings (per spring):
- 3 Leaf = 425kg
- 4 Leaf = 550kg
- 5 Leaf = 650kg
- 6 Leaf = 750kg
- 8 Leaf = 950kg

Frequently Asked Questions

Should I measure my trailer spring following the curve (camber)? The best way to find a replacement spring is by measuring straight across from the front eye to the rear eye, starting and ending in the eye centre.

Can I use this spring on a dual axle trailer/caravan? Yes! These springs are ideal for tandem axles.

45mm x 710mm Shackle Leaf Spring Guide

Ensure balanced load sharing, a stable ride, and complete towing safety by following these essential suspension guidelines.

✔️ The Do’s

Measure accurately: Double-check your spring width (45mm) and eye-to-eye length (710mm) before purchasing replacement packs.
Replace in pairs: Swap out both leaf springs on the same axle simultaneously to prevent sagging, listing, or uneven tire wear.
Grease bushes correctly: Apply high-pressure chassis grease to your shackle pins and nylon/bronze bushes to minimize operational friction.
Torque U-bolts evenly: Tighten your suspension U-bolts in a cross pattern, and re-torque them after your first 100 kilometers of travel.
Allow shackle movement: Ensure the rear shackle plates swing freely so the 710mm spring can flex properly under heavy loads.

❌ The Don’ts

Don’t weld the leaves: Never apply heat or weld directly onto the spring steel, as this completely destroys its heat-treated tempering.
Don’t reuse worn hardware: Avoid pairing brand-new springs with rusted U-bolts, worn shackle pins, or deteriorated eye bushes.
Don’t lock shackle pins: Avoid overtightening the shackle assembly nuts to the point where the linkage plates cannot pivot.
Don’t mix spring ratings: Never combine a 5-leaf spring with a 6-leaf spring on opposite sides of the same trailer axle.
Don’t ignore fractures: Never tow your trailer if you notice any hairline cracks, deep corrosion pits, or leaf shifting in the pack.

Additional information

Weight	N/A
Dimensions	93 × 15 × 10 cm
Spring Leaf #	3 Leaf, 4 Leaf, 5 Leaf, 6 Leaf, 8 Leaf

Our Service Lifetime Warranty

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.

Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.

Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.

60-Day Returns

After 60 years of experience, we know that life has its unpredictable moments.

All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.

You can view our full policy for change-of-mind returns here.