WHAT'S IN THE BOX

Everything you need, ready to install:

  • check_circle Retenser unit (3-loop or 4-loop - your choice above)
  • check_circle Adjustment key with safety cord
  • check_circle Two base parts (flat and rounded -fits almost any racket bridge)
  • check_circle QR code installation guide - your stringer scans it, done
  • check_circle Reusable for up to 10 re-stringings

Retenser Standard

Stop playing with dead strings. Restore fresh-string feel in seconds — and save on restringing all season long.

€34,95
€34,95

1. CHOOSE YOUR VERSION - COUNT THE LOOPS AT YOUR RACKET'S BRIDGE

Flip your racket over and look at the curved bottom section (the bridge).
Count the string loops passing through it - you'll see either 3 or 4.
Select the matching version below. Not sure?

Version: 3-LOOP VERSION
Subtotaal: €34,95

String tension starts dropping the moment your racket leaves the stringing machine - and doesn't stop. Within weeks, that responsive, powerful feel you love has gone flat. You swing harder, your arm works more, your game suffers. The Retenser Standard solves this permanently.

Fitted to your racket's bridge by any stringer, the Retenser lets you add back up to 2 kg of tension - twice - using nothing but the included key. Turn it. Feel the difference. Walk on court playing like you just came straight from the stringer.

Approved by the International Tennis Federation (ITF), compatible with every string type, and reusable for as long as you play. A one-time investment that pays for itself every season.

Retenser Standard

Retenser Standard

€34,95

Retenser Standard

€34,95
Version: 3-LOOP VERSION
SERIOUS ABOUT YOUR GAME?

SERIOUS ABOUT YOUR GAME? UPGRADE TO THE RETENSER PRO.

Get three cylinder sets — soft, medium, and hard — for precision tension control in any condition.

Plus a second key and storage pouch.

FREQUENTLY ASKED QUESTIONS

How do I know which version to buy?

Count the string loops at the curved bottom section of your racket (the bridge). Three loops = order the 3-cylinder version. Four loops = order the 2-cylinder version. Still unsure? Email us at info@retenser.com with a photo and we'll confirm in minutes.

Does my stringer need to know how to install it?

Your stringer doesn't need any prior experience. Every box includes a QR code linking to a short installation video — they scan it, watch it, done. It adds minimal time to a standard restringing.

Will it fit my racket?

The Retenser fits almost every modern tennis racket. Each unit ships with two base parts — one flat and one rounded — to accommodate different bridge shapes. Works with all string types.

Does it add much weight?

Around 5 grams — less than 2% of racket weight. It also replaces the existing grommet strip at the bridge, which partially offsets the addition. The Retenser sits exactly at the racket's centre point, so balance is minimally affected.

Is it allowed in tournaments?

Yes. The Retenser is officially approved by the International Tennis Federation (ITF) and can be used in all professional and amateur competitions worldwide.