剎車變速桿 - Sram Rival DoubleTap Controls
SB-RIV-A1

Built around SRAM's DoubleTap® technology, SRAM Rival controls offer a performance advantage that other competition level shifters can't touch. With Zero Loss shifting, front gears are engaged immediately. Added cable routing options allows for both brake and shifter cables to run along either side of the handlebar. SRAM Rival also incorporates the popular Reach Adjust feature, which SRAM invented, and allows riders to customize their brake and shift levers. Now every rider has a choice on positioning their DoubleTap® levers.

• ZeroLoss™ shifting engages immediately
• Front trim position on big ring
• Incorporates Reach Adjust for optimal customization

DOUBLE TAP
DoubleTap makes changing gears easier and faster, eliminating the cumbersome and awkward engagement associated with two- lever systems. DoubleTap handles up- and downshifts in one short, sweeping mot io n, with minimal effort and maximum comfort no matter where you are on the bars.

EXACT ACTUATION
When we launched our road technology from scratch we reapplied our MTB proven SRAM 1:1 actuation ratio (shifter cable travel: derailleur movement). EA helps to simplify and stabilize the uneasy act of balancing rear derailleur hanger design, tight cog spacing, and exact cable tension. The result: the easiest index shifting system to set up and it stays that way.

ZERO LOSS
ZERO LOSS simply means, well, zero loss - when you push on the lever, for an upshift or down shift, the cable is engaged instantly - zero loss of movement. There is no middle- ground where you're waiting for the shift to come. Gear changes are instant and precise.