Incredibell

The stock bell, while musically pleasant, did not get attention.  The Incredibell solved this, but necessitated rethinking grips (which was the next step anyhow).

Selle Royale 60 degree moderate seat and tail bag for flat repair gear

While seats are a matter of personal taste, I found this seat to be the only one I could ride the entire 100 miles with which wouldn't bruise my sit bones or neuter me.  On the balance between the two, this one tilts more toward the neutering side and less on the sit bones due to the squishy surface and lack of a center cutaway or indent.  For me and this ride, it was the right balance.

I kept my tools and flat repair gear in the tail bag as this is most convenient when commuting too.  I carried three spare tubes, a roll of rim tape, patch kit, 2 CO2 cartridges and a nozzle, levers, and a chain master link.  The frame pump was just a backup.

Tikit rear rack

The Tikit rear rack let me hang my small Ortlieb pannier on the left to hold my junk on the ride.  It's a solidly made rack, but the pannier's rear clip has to be mounted behind the rear crossbar to avoid heel strike.  Since I only use the one left pannier for my commute and on long rides, I'm satisfied with it's compact low slung design and associated limitations.

Oh, this rack is awesome to set the bike on when folded.  The rubber hoses on the edges keep it from sliding up the aisle on the bus when the driver slams on the brakes.

Schwalbe Kojak tires and quality cloth rim tape

Replaced the stock Schwalbe Marathons with Schwalbe Kojak tires for significantly lower rolling resistance and a quieter ride.  While I was at it, I installed high quality rim tape to protect the higher pressure tubes.  Definitely worth it.

These tires are fast and sticky, but only on pavement.  They are not as versatile or pinch-flat resistant as the stock Marathons.

Tire pressure indicating valve stem caps.

Indicator valve caps let me know if the pressure drops below 80PSI.  I keep the pressure between 80 and the rated 115 PSI of the Schwalbe Kojak tires.

Double front chain guards prevent chain drop

After having the occasional issue dropping the chain while flying the bike, I bought a TruVativ 52 tooth chainguard online and moved the stock chain guard inboard with five 3mm spacers and five new stack bolts. Hasn't come off again.  And, the new chain guard looks great.

SRAM PC850 chain with PowerLink

It may be my imagination, but I think chain is a tad quieter than the stock one.  The powerlink shown makes it a field replaceable chain.