Browsing Chainrings & Guards from Interloc Racing Design

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Road & Track Chainrings
Interloc Triplizer Chainring
Margin Booster
  • Add a 74mm BCD inner chainring to any 110mm bolt circle crank
  • Precision CNC machined 7075-T6 aluminum with shift ramps/pins and polished finish
  • Must replace bottom bracket with 118mm or wider
  • Double chainring bolts/spacers not included (spacers are needed to space the Triplizer ring's teeth and inner ring's teeth 8mm. A 3mm spacer will work in most situations, but it depends on the inner ring's thickness. A bike shop will have a range of spacers to experiment with.
  • It may be desirable to replace your front derailleur with a "triple road" model, though some shops have reported IRD CD front derailleurs work well with Touring triple cranks (48-36-24t)
  • 9 and 10 speed fitment
item # ring type mount teeth color in stock?
  RD5516 middle 5x74/110mm 36t silver NO