New parts as pictured. 11-28 tooth 5700 ten speed cassette and Ultegra 6800 (English threads) bottom bracket with TL-FC25 Installation adapter included.
If you use the spacers and lockring from an old Ultegra cassette, the 105 weight is the same as the Ultegra cassette weight.
No real difference in performance, just savings. The 6800 bottom bracket has 50% less friction than the old 6700 BB.
Put on a new chain and you will have a better than new drive train for not much money.
Please respond with phone number where I can call or text and you will answer.
Price is very fair and not negotiable. $60 CASH. No more. No less.
do NOT contact me with unsolicited services or offers