BREATHER BOLTS CHROME PAIR EVO BIGTWIN, XL Category_Default Category/SLED/Ski-Doo/GEN4 850 E-Tec Turbo going from 68 hp to

going from 68 hp to near or above 105 hp

not only outperforms everything else

They’re CNC cut for a perfect fit to your PRO XP 4 and to prevent them from stretching or sagging

More responsive feel

wiring harness and switch

BREATHER BOLTS CHROME PAIR EVO BIGTWIN, XL Category_Default Category/SLED/Ski-Doo/GEN4 850 E-Tec Turbo going from 68 hp toUse these brackets and breather kits when installing an aftermarket aircleaner. If a custom breather system is used, some support brackets are available without the breather system. Spacer 820 50525 can be used in conjunction with breather bracket kit 820 50512 to mount aftermarket aircleaners with a CV Delphi EFI bolt pattern to TBW models.