Crown frm syncro ring 34d bcd 104mm

Crown frm Syncro-Ring Single 104

Teeth 34

Made from ergal plate for ENDURO or X-COUNTRY, the Syncro-Rings have the differentiated tooth thickness to prevent the chain from falling. Used by Lupato in Enduro Racing without chain guide.

Made in Italy

Convert triple or double cranksets with 104mm bolt turn into single with sprockets at 10 or 11v.

Wide and narrow tooth profile to eliminate patent-compliant chain drop expired US 4,174,642

Made CNC from Aluminum Alloy 7075 (Ergal)

Polished, black anodized and lasered

The 32 and 34d crowns are equipped with 4 adapters for triple conversion

The 30d crowns are supplied with the Assembly Kit (12 adapters and 12 screws for conversions double or triple)

Weight: 30d 40gr 32d 39gr 34d 46gr

They can be used for both X-Country and competitive Enduro bikes mounted on double or triple cranksets with 104mm bolt turn. In the case of triples the Syncro-Ring 104 of 32 or 34 must be mounted in an intermediate position. In this case you need 4 spacers to be placed under the fixing bushings to restore the thickness of the crown big

The 30d Syncro-Ring is particular in that the fixing to the crankset takes place with M6 steel screws. Special spacers are provided for native cranksets double, triple or for single FRM (click on Download for manual)

The ideal combination is with rear gearboxes with friction cage like the new Sram Type2 that avoids the fall of the chain from below, so that you do not have to use a lower chain tensioner. No top chain guide required

Crown weight: 34d 50gr