Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
KHS
Previous used estimate
$1,024 - $1,054
Actual value depends on condition, size, and local demand.

12-month projected trend
13%
Direction and magnitude, not judgment
vs. category average
5%
Drops faster than category avg
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
Trail-blasting and envy-inspiring are just a few of the things you could say to describe KHS's SixFifty 6600. Its stiff and lightweight MSD/MLS full carbon frame is equipped with 150mm of travel engineered with a RockShox Monarch RT3 shock out back and a RockShox Pike RCT3 soaking up another 150mm of terrain in front. It rolls on double-wall, 27.5-inch WTB STP-i25 rims that deliver lightweight all-trail dominance while an impressive, dirt-hugging precedent is set by a pair of tenacious Maxxis High Roller II tires. You’ll get up to speed and stay there with the streamlined SRAM GX1 11-speed drivetrain, and when it's time to hit the brakes, Shimano hydraulics deliver reliable stopping power. The KS dropper post ensures your saddle is exactly where you need it all the time, and the WTB and Kore components add to the high-quality build of this trail conquering machine.
Inspection
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Inspection
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Confirm fork and rear shock service intervals and check pivot bearings for play.