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Renthal SR4 Ultralite Alloy Chainring (discontinued)

Average User Rating: (Spectacular)
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Where art and engineering meet

The Good:

Light and very strong.

The Bad:

None found by me

Overall Review:

When you get this chain ring it just blings off CNC machined sex. Why would you ever be happy with the pieces of 1950s window frames and old soda cans that call themselves chain-rings when you buy a new crank? It's tough as nails and light as hell. I'd get a tattoo of it on my body if I liked tattoos.


Product Renthal SR4 Ultralite Alloy Chainring
Riding Type Trail
Chainring Type
Speeds 1x
Tooth Count 32, 33, 34, 35, 36, 37, 38, 40, 41, 42, 43, 44
Hole Pattern 104mm BCD
Materials 7075 T6 aluminum, hard-anodized finish
Colors Alu/Gold
  • 0 lb 1.4 oz (41 g)
  • 0 lb 1.6 oz (44 g)
Miscellaneous • Computer-aided Ultralite design enables the ultimate combination of strength and lightness
• High strength 7075-T6 aluminum alloy provides excellent durability
• Hard anodized surface coating for increased longevity
• Precision CNC machined to extremely tight tolerances
• Single speed, 8, 9, and 10-speed compatible
• Slightly offset toothbed for chain device compatibility (32-41 tooth chainrings)
• 41-44 tooth chainrings have a centralized toothbed for a better chainline when used on a race BMX
Price $52.95
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