Hauling it straight down a rough trail is always a good time, but bouncing through tight corners can be a real blast too. Recognizing that every rider has their own style, Forbidden Bike Co. decided to create the Ziggy Link, a replacement link that allows Druid owners to convert their bikes to a mixed wheel size setup, or ‘mullet bike’ if you prefer.

The Ziggy Link replaces the lower link on the Druid’s Rate Control Linkage, and compensates for the differences when you slap a 27.5” wheel in the back end. What’s really cool is that it doesn’t just keep the bike’s original geometry; Forbidden went a step further and tuned the link to work best with the mixed wheel size setup.

Forbidden Bikes Ziggy Link, three steps

The crew at Forbidden has had some interest in the mullet concept since early last year, so they’ve been playing with it out on the trails. Their three-step testing went like this: First, a 27.5” rear wheel was tossed onto a stock Druid. They say it was fun, but the BB dropped way too low. They then created a prototype link that matched the Druid’s geometry with its usual 29” wheels; it was better, but still didn’t quite hit the mark. Step three was tuning the link to work best with the mixed wheel sizes.

Forbidden Bikes Druid with Ziggy Link geometry chart

To emphasize the mixed wheel setup’s aggressive tendencies, the Ziggy Link will drop the Druid’s BB by 6mm and slacken the head tube angle by 0.5°. The bike’s kinematics were retained in the Ziggy Link’s design, so your mulleted Druid’s suspension will behave just as it does with its stock 29” wheels. See the above chart for full geo specs with the Ziggy Link in place.Forbidden Bikes Ziggy Link

If you’re still unsure of why Forbidden decided to release the Ziggy Link, I thought the explanation in their press release was brilliant;

We all know that 29” wheels are fast, but hitting corners and linking turns on a Ziggy Link equipped Druid is a feeling that needs to be experienced. Delivering increased reaction times and a heightened ability to change direction and adapt to the trail ahead. Opening the Druid up and letting things get rowdy while remaining relaxed and composed is eye-wateringly fun.”

Forbidden Bikes Ziggy Link, on bike

Installing the Ziggy Link is something home mechanics can handle, so long as you have a torque wrench (up to 14Nm) and know how to use it properly. Correctly tensioning the link bolts is a crucial step, so if you have any doubts Forbidden recommends taking the bike to a professional mechanic.  If you’re equipped to do this at home, the only other tools you’ll need are 5mm and 6mm allen keys, lithium grease, and 5mm and 6mm torque bits.

Forbidden Bikes Ziggy Link, on Druid

Images c. Forbidden Bikes

Please note that Forbidden Bike Co. does not intend for people to run 27.5” front wheels on the Druids, and doing so will void your warranty! The Ziggy Link costs $139.99 and comes in anodized red only. It will be available online and through Forbidden dealers in late May.



  1. CycleKrieg on

    Except some of us are old enough to remember all the other mullets that proceeded this way and then faded away as people realized they weren’t worth it.

    • JNH on

      I used to have a Trek 69er and it was ace. But also more or less pointless, except for very short riders who get butt-buzzed by 29ers there doesn’t seem to be much future for Mullets this time around either. All credit to Forbidden for such a neat solution though.

    • Yan on

      At the start of 29er they were seen the same they were just slapping big wheel on a frame that did work with them. Forbidden re did the geo as well as the link to get smaller wheel. If it’s done well they works.

  2. Zoso on

    I’m 51 and I don’t remember a mullet outside of the Trek mentioned. It’s an idea that makes sense to me regardless of height.

    • CycleKrieg on

      There have been all sorts of mullets. 26″/24″, 29″/26″, 27.5″/26″ All lived for awhile as commentators talked about the future of mixed wheel sizes and then the mullet bikes went away. Every few years it feels like another rash of “this is the best of both worlds” goes thru and we get mullet bikes till everyone realizes the advantages just aren’t there.

  3. Alan on

    The original Cannondale mt bike in the 80s was a mullet, though I believe the rear wheel was something like a 24″.

  4. Tim on

    The fact that mullet bikes have always disappeared doesn’t mean they don’t offer advantages- it just means they weren’t commercially viable. Those two often go together, but not always.

  5. Ol' Shel' on

    There’s always a trade-off. the smaller wheel will have less traction, a harsher feel, and more rolling resistance. It’ll drop farther into holes and hang up more on taller objects. If you’re already used to a 650 on the back, then no problem; you’ll enjoy the added traction of 29 up front. If you ride a 29er with an appropriately-short CS length, then you’ll notice that you’re losing some of the traits you like. It’s all about what you value most.

  6. David on

    All for the mullet, most salient is the fact I don’t make contact with the rear wheel on my butt. Currently running my sentinel as a mulllet, can’t wait for forbidden to be available in Aus.


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