New-Old-Stock Shimano Dura-Ace 6-Speed UniGlide (UG) Cassette 13x23 (Silver)

New-Old-Stock Shimano Dura-Ace 6-Speed UniGlide (UG) Cassette - 13x23 (Silver Finish) Thank you for your interest in this item and please visit our store for other offerings. This offering is for a new-old-stock (NOS) Shimano Dura-Ace 6-speed cassette in a silver finish. It's the old UniGlide "twisted-tooth" design that includes a 13-15-17-19-21-23 cluster. The date code stamped on the first sprocket indicates a late 80's production date, which we believe was around the time Shimano rolled-out the HyperGlide technology on its high-end component groups (although we noted as late as 1992 where both the UniGlide and HyperGlide technologies were offered/marketed concurrently in Shimano reference/promotional materials from this period). This cassette is index (or as Shimano used to call it, "SIS") shifting capable, but as mentioned above, this is a UniGlide cassette, so it's only compatible with a UniGlide splined hub. Additionally, because all of the sprockets are loose or "singles", they are individually replaceable. In fact, one of the benefits to the uniform design of each UniGlide sprocket (w/o a built-in spacer) is that once a sprocket is worn out, it may be reversed or "flipped over" on the freehub and used as if new...

Giving you twice the useful life on each individual sprocket. This cassette design also allows for flexibility in changing sprocket sizes to create a rear cluster that better suits individual needs (assuming of course, the availability of additional UniGlide sprockets).

As for condition, these UniGlide cassettes are new and unused. They were bulk packed in plastic bags and separated by cardboard dividers, which really protected their cosmetic condition.

Similar offerings we have in sealed retail boxes may still be a little nicer cosmetically, but not by much, as these units are still among the nicest of the top-end Dura-Ace UniGlide cassettes we have in stock. Shimano designed/manufactured their Dura-Ace Uniglide cassette/freehub systems to different specifications relative to their other UniGlide systems. The splined cogs and spacers (and the related splined section of a UniGlide hub body) are similar for all Shimano UniGlide models, but the smallest UniGlide sprocket that threads onto the end of a UniGlide hub body is spec'd to different standards. More specifically, Shimano made their Dura-Ace threaded sprockets (and the threaded section of their Dura-Ace hub bodies that accomodate them) with a smaller diameter relative to their other UniGlide systems. We measure Shimano UniGlide threaded cogs (with the exception of Dura-Ace models) to be about 33.5 mm in diameter and they will thread fine on just about any non Dura-Ace UniGlide freehub.

However, Shimano's Dura-Ace threaded UniGlide cogs were spec'd to a smaller standard... With only a 31.0 mm diameter... And are only compatible with Dura-Ace UniGlide freehubs with the smaller (in diameter) threaded hub body section.

Please keep in mind this is only an issue with threaded UniGlide sprockets, as all splined UniGlide sprockets and spacers are interchangable on just about any UniGlide freehub... This particular offering includes the smaller Dura-Ace UniGlide sprocket, with a threaded inside diameter of 31.0 mm. You may visit our store by clicking on this "Store Home Page". Link and please note the product categories on the left side of our "Store Home Page". We have also moved our "Terms and Conditions". You may navigate to this page by clicking on the link on the left side of our "Store Home Page". Unfortunately, this service is more expensive, especially for smaller/lighter packages, relative to the First Class International service. This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Cassettes, Freewheels & Cogs". The seller is "bicyclists_retreat" and is located in this country: US.

This item can be shipped worldwide.

Model: Dura-Ace
Country/Region of Manufacture: Japan
Color: Silver
Part Type: Cassette
Compatible Bike Type: Road Bike
Brand: Shimano
Number of Speeds: 6 speed