I installed the Sato exhausts from Ebay this weekend. As sound goes, the 919 stock sounds like an ill-tempered sewing machine; with the Satos, the sound takes on a lower, more throbbing note, like a growling beast. My girlfriend has also remarked that the bike "sounds sexier," and my informal butt dyno reports an increase in horsepower. I'm pleased!
Here's the Praying Mantis with her stock exhausts.
Off comes the seat, then the grab rail. See that little clip in the foreground, connecting the tail section to the plastic surrounding the seat? Both of those need to come out.
Next the pair of 10mm bolts under the seat need to be removed.
finally, unplug the 'lectrical connections to the taillight, and you can remove the tail section.
Tail section off.
Remove the hanger bolt (13 mm) to free the exhaust from the frame.
Loosen each exhaust clamp and remove each exhaust. Don't forget to remove the old clamp as well!
No exhaust, no tail section
Where'd the rear end go?
In the box, ready to go. Note that I've already used a bit of rubber cement to glue the rubber pads onto the exhaust hangers, and positioned the exhaust clamps.
Place the exhaust hanger clamp at the ready, with both 5 mm allen-head bolts loose for later adjustment.
Slip the exhausts over the old headers
And attach the exhaust hanger to its allen bolt. Don't tighten anything down yet, there will be much fiddling and re-adjusting to get both exhausts even! The suggested order for tightening is: 1. Exhaust clamp 2. Upper exhaust hanger allen-head bolt 3. Lower exhaust hanger allen-head bolt.
Note position of exhaust clamp nut--facing down and angled slightly inward toward the rear tire.
Exhaust hanger attachment
Evened up to my satisfaction at last
Lookin' good, now just needs the nameplates (got 'em from Dan Kyle, since they weren't included with the ebay set)
After a couple of pops with the blind rivet gun
And now, it's time to ride!
My destination for the day: Muir Beach overlook, off Hwy. 1. Ahhhhhh.
Harbor seals at Bolinas Lagoon