New spiders from sbp

Now you can trim weight from your bike with alternatives to heavier steel chainring discs, by using your favorite chainring and a new lightweight spider that mates to our freewheels.

The spiders are made from AL 6061-T6, an "aircraft" grade aluminum alloy with high tensile and yield strength and superior resistance to corrosion. At 4.8mm thick they are strong and resilient yet still save well over half the weight of an equivalent size steel chainring disc. They fit onto our flanged crankset freewheels, attached through one of two sets of five holes in the spiders. One set of holes handles countersunk screws, especially for spiders set on the outside of the freewheel flange. The other set of holes handles any standard flat-bottom machine or cap screw.

For some builds you are going to want our low cost steel chainring, but for many setups you want a different look and lower weight.

We are making them available in the most common sizes for all styles of cycling.


· The 4-arm 104mm BCD (Bolt Circle Diameter) spider mates with virtually all MTB chainrings and those on many city bikes. Only 54 grams, less than 2 ounces.


· The 5-arm 110mm BCD spider is compatible with many city, road and cyclocross chainrings. 70 grams, 2.5 ounces.


· The 5-arm 130mm BCD spider is compatible with serious road chainrings. 84 grams, still less than 3 ounces.

http://www.sickbikeparts.com/catalog/product_info.php?cPath=23&products_id=163

http://www.sickbikeparts.com/catalog/product_info.php?cPath=23&products_id=164

http://www.sickbikeparts.com/catalog/product_info.php?cPath=23&products_id=165

d_gizzle said:

That. Is. Awesome! Gotta get one.

Can you tell me how to figure out which of the 5-arms I need? I have an old 52 skip tooth on a bmx that's dying from non use.

Click to expand...

Hmm, yeah I don't know just by tooth count......I would put that bad boy on a piece of cardboard or paper and and make a circle with the center of the 5 outer holes....measure diameter with a metric ruler. 110mm or 130mm?