Skip to content
Optitec Caravan & Trailer MoversOptitec Caravan & Trailer Movers
  • Home
  • Shop
  • Movers
    • Optimover
    • All Terrain Mover
    • Buyers’ Guide
    • Watch Videos
  • Support
  • Find Us
    • Contact Optitec
    • Find Us around Australia
  • 0
    • No products in the cart.

      Return to shop

  • 0
    Cart

    No products in the cart.

    Return to shop

  • 4.8 Star Google Review

    3 Year Warranty

    Free Shipping

    Australian Engineered

  • 4.8 Star Google Review

    3 Year Warranty

    Free Shipping

    Australian Engineered

Login

Lost your password?

Explore

Shop
Optimover Info
All Terrain Mover Info
Watch Videos
Stockists & Shows

Need Help?

Payments & Shipping
Warranty & Returns
Set Up Support
Product Support
Shop Parts

Contact Us

E: info@optitec.com.au
T: (+61) 0417 367 257
A: Unit 5/18-20 Edward St, Oakleigh, VIC

Get Directions

Our workshop opening hours vary week to week so please call ahead if visiting. 

Contact Us

Copyright 2026 ©

Visa
MasterCard
Apple Pay
Google Pay
  • Home
  • Shop
  • Movers
    • Optimover
    • All Terrain Mover
    • Buyers’ Guide
    • Watch Videos
  • Support
  • Find Us
    • Contact Optitec
    • Find Us around Australia
  • Login

Clamp Size Guide

Optitec recommends a heavy duty double clamp for moving trailers and caravans over 1500kg.   There are numerous clamps available to fit different size drawbars. 

Finding your perfect clamp:

Step 1.  Locate the best position on your drawbar to place the bracket; the Optimover is effective anywhere on the front drawbar where space allows. 

Step 2.  Measure the drawbar  height.

Step 3.  Measure the drawbar width.

Step 4.  Use the size guide below to select your bracket.

 

To Fit

Clamp Dimensions

Additional Notes

Clamp

Name

Drawbar Height (mm) 

DrawbarWidth (mm)

Total Width
(mm)

Front Plate height x width
(mm) 

Width between U-bolts (mm)

 

OW-15

Large Compact Duel Clamp 150mm

150

50

160

150 x 140

140

Most common fit for caravans

OW-14

Small Compact Duel Clamp 100mm

100 to 130

50

160

150 x 140

140

Most Jayco caravans (not the all-terrain/ adventurer) 

OW-6

Large Duel Clamp 150mm

150 

50-150

237

200 x 237

195

Alternative to OW15 where drawbar width is larger than 50mm.

U-bolts from the back fit better.

OW-7

Small Duel Clamp 100mm

100 

50-100

237

170 x 237

195

Ideal for boats (can go back-to-back with existing jockey wheel)

OW-8

Medium Duel Clamp 130mm

130

50-130

237

200 x 237

195

Ideal for boats (can go back-to-back with existing jockey wheel)

OW-5

X Small Duel Clamp 75mm

75 

50-75

237

170 x 237

195

Ideal for boats (can go back-to-back with existing jockey wheel)

OW-18

Double Clamp Brack ALKO

NA

NA

 

150 x 140

NA

European & UK vans that use an Alko Chassis with plastic cover

OW-19

Optitec Offset Double Clamp

100 or 150

50-150

 

200 x 237


(150 mm plate)


170 x 237

(100 mm plate)

195

Used to get higher or lower (ie. in a carport) 

Raise or lower by 150mm

Can be fitted to 150mm depth or 100mm depth

OW20

Gooseneck Dual clamp

         

Options to fit Zone, Snowy and Ezytrail - please contact us first or after order to confirm your measurements.