Hollow-forged aluminium arms, 30mm axles, huge range of BBs, and more
The Turn Girder mountain bike crankset will offered in 1x, 2x, and 3x configurations, all with hollow-forged aluminium arms, a 30mm-diameter aluminium spindle, and a wide range of bottom bracket compatibility. Claimed weight is "about 25g heavier than Shimano Deore XT", which would put a double setup at about 765g with bottom bracket
The Turn Girder mountain bike crankset will offered in 1x, 2x, and 3x configurations, all with hollow-forged aluminium arms, a 30mm-diameter aluminium spindle, and a wide range of bottom bracket compatibility. Claimed weight is "about 25g heavier than Shimano Deore XT", which would put a double setup at about 765g with bottom bracket - James Huang / Immediate Media
While Turn's sister company, Praxis, is best known for chainrings, the parent company of both outfits is an OEM manufacturer for a broad range of well-known bicycle brands so it's little surprise to see workmanship like this - James Huang / Immediate Media
Praxis's outer chainrings are always forged but given the limited production quantities, the 1x chainrings are CNC machined instead - James Huang / Immediate Media
On the road side, Turn introduces the Zayante, which offers the same hollow-forged construction and 30mm spindle diameter as the Girder. Likewise, claimed weight is 25g heavier than a Shimano Ultegra, which puts a complete Zayante crankset at around 790g with bottom bracket - James Huang / Immediate Media
Naturally, the new Turn cranks will come with Praxis chainrings - James Huang / Immediate Media
Turn isn't forgetting about 1x cyclocross racers, either. Just 42T chainrings will be offered for now in both 110mm and 130mm BCD sizes but more are on the way - James Huang / Immediate Media
Accompanying the new Turn cranks are a full complement of Praxis bottom brackets to fit nearly any frame - James Huang / Immediate Media
Certain bottom brackets will again use Praxis Works' awesome collet-type construction to virtually eliminate any chance of creaking - James Huang / Immediate Media
Turn will start shipping the Girder mountain bike crankset in 1x configurations only to start, but 2x and 3x setups will follow shortly thereafter - James Huang / Immediate Media
Praxis Works may be best known for its chainrings and bottom brackets but soon you'll also start seeing its new range of cranksets called Turn. Competitively priced and impressively flexible in terms of bottom bracket compatibility, the new Turn cranks will soon be finding their way on to both shop shelves and as OEM equipment on a wide range of Specialized bikes.
Turn will hit the market with two crank models to start: the road-going Zayante and the MTB-specific Girder. Both feature hollow-forged aluminium arms, oversized 30mm-diameter aluminium spindles, and interchangeable chainring spiders for what Turn claims should be the stiffest options available for the money. Claimed weights are "about 25g heavier than [Shimano] Ultegra and [Deore] XT", which would put complete Zayante and Girder setups at about 790g and 765g, respectively.
On the road side, turn introduces the zayante, which offers the same hollow-forged construction and 30mm spindle diameter as the girder. likewise, claimed weight is 25g heavier than a shimano ultegra, which puts a complete zayante crankset at around 790g with bottom bracket: on the road side, turn introduces the zayante, which offers the same hollow-forged construction and 30mm spindle diameter as the girder. likewise, claimed weight is 25g heavier than a shimano ultegra, which puts a complete zayante crankset at around 790g with bottom bracket
The 30mm-diameter spindle and oversized hollow-forged aluminium arms should yield excellent stiffness
The new Turn cranks will also be quite versatile in terms of fitment, too. Like the similar (but not identical) BB386EVO system, Turn's 30mm spindle will work in a wide range of bottom bracket shells depending on which set of bearing cups is used. Available options include standard threaded, BB30, PressFit30, Specialized OSBB, and even PF86 and PF92 – but ironically, not BB386EVO.
Combined with the interchangeable chainring spiders, Turn hopes to have an option for nearly every possible niche, including 1x and 2x for both road and mountain, and even 3x for mountain only. Chainrings will of course be provided by Praxis.
Praxis's outer chainrings are always forged but given the limited production quantities, the 1x chainrings are cnc machined instead:
1x chainrings will be offered for both MTB and cyclocross variants
Speaking of Specialized, Turn says the Zayante road cranks will be included as standard equipment on nearly ten of that company's road models for 2015 but interested riders will soon be able to buy them aftermarket as well. Retail prices for the Zayante and Girder are US$299 and US$279, respectively, including chainrings but without bottom brackets.
James Huang is BikeRadar's former technical editor. After leaving BikeRadar in 2016, he worked at CyclingTips and Escape Collective. He now runs the Substack cycling publication N-1 Bikes.
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