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The Dual Ring Security (DRS™) was designed to work with a front derailleur, a middle ring (30T-36T) or (34T-40T) and a granny ring.
The patent pending Flip-Flop™ roller forces the DRS to maintain constant chainring/chain engagement, regardless of adverse conditions. The Flip-Flop™ roller essentially acts as an adaptable structure, reacting to changes in driveline configuration automatically.
A bicycle equipped with the DRS™ can be pedaled over any terrain without worry of dropping a chain, and it can also be backpedaled in any gear combination, regardless of chainline.
The standard derailleur version fits almost all standard and elevated chainstay frames, the E-type version will fit many frames also, but can interfere with pivots on some full suspension models with narrow BB spindles. Check our application guide to verify fitment with your frame.
Features:
- Incredibly strong, Patent Pending Impact modified Makrolon® plastic bashguard
- Extremely strong yet lightweight design refined by extensive computer analysis
- Patent Pending Flip-Flop™ roller design
- Low friction/wear modified Makrolon stationary lower sliders
- Compatibility with all common derailleur types
- Works with 113, 118, and 122.5 BB spindle widths as supplied
- Can fit virtually any spindle width using our separately avaialble ISCG mount plate, especially adaptable to 3-piece cranks
- When using ISCG mounts, entire inner plate adjusts outward, away from BB shell for more tire clearance than other guides when using longer spindles
- Simple design and setup chart makes installation and setup extremely quick and easy
- All guide adjustments are accessable from the outside of the frame, no more tedious adjustments while trying to avoid frame members
- All captive fasteners allow for one-tool, one-handed adjustment
- Allows E-type derailleur for DH bike shifting capability
- All modles are International standard mounting compatible
MSRP: $149.95 US
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