588 S&S® SUPER STOCK™ STEALTH AIR CLEANER! The heart of the single bore tuned induction system is the dual runner, twointo one intake. The tuned runners are very similar in appearance to the dual runner intake for our dual bore induction system, but the design allows for more flexibility. Instead of bolting directly to a throttle body, the runners of the single bore induction join together in a smooth, flow enhancing curve and the unit bolts to an adaptor bracket. A variety of adaptor brackets make it compatible with lot of different engine styles. Proven Performance! Like the VFI dual tuned runner system, the single bore tuned runner delivers a healthy boost in midrange torque ... just what a street rider needs. Peak horsepower is also increased. The tuned runner system makes even more horsepower than an S&S® teardrop air cleaner. Performance increases are across the board for stock and big inch engines alike! See dyno charts. 50-0487 50-0486 S&S® Single Bore Tuned Runner Induction System • Bolt on performance – increased torque and power. • Air filter area almost two times that of an S&S® teardrop air cleaner. • Adaptor brackets available for many engine/fuel system combinations. Single Bore Tuned Induction Systems (For all applications - includes tuned runners and filters.) 50-0487 Chrome Replacement air filters with clamp 50-171020 Red 50-171023 Blue Adaptor Bracket kits for S&S® Single Bore tuned induction systems For a complete kit you must order the 50-0487 above and the appropriate adaptor bracket for your application from the list below. Year Model 2001-UP Delphi EFI Stock Carburetor S&S® Single bore EFI Stock Carburetor Super E or G 84-’99 Big Twin 50-0489 50-0486 50-0484 86-90 Sportster™ 50-0488 91-03 Sportster™ 50-0488 99-Up Big Twin 50-0486 * 50-0489 * 50-0484 * *Not available for 2008 Touring models with electronic throttle control. All S&S® engine except 4-1/8” bore use the same bracket as stock engines for that year group.
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