Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2021 Trek Powerfly 4
Value Guide market data · 2021 Trek Powerfly 4
12-month trend
12%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2021 Trek Powerfly 4
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Powerfly model years
2021 Powerfly 4 lineup
Overview
About this bike
2021 Trek Powerfly 4 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- SR Suntour XCM 34, coil spring, preload, lockout, tapered steerer, 44mm offset
- Frame
- Alpha Platinum Aluminum, Removable Integrated Battery (RIB), tapered head tube, Control Freak internal routing, Motor Armor, Boost148
Drivetrain
- Groupset
- 2021 Trek Powerfly 4
- Crankset
- FSA Bosch CK-220, 165mm length
- Chain
- KMC X10, 10 speed
- Rear Derailleur
- Shimano Deore M5120, long cage
- Chainrings
- 36T
- Shifters
- Shimano Deore M4100, 10 speed
- Cassette
- Shimano Deore M4100, 11-46, 10 speed
Brakes
- Brakes
- Tektro HD-M275 hydraulic disc w/Tektro, 203mm, 6-bolt rotors
Cockpit
- Saddle
- Bontrager Commuter Comp
- Handlebar
- Bontrager alloy, 31.8mm, 15mm rise
- Headset
- FSA IS-2, 1-1/8" top, 1.5" bottom
- Stem
- Bontrager alloy, 31.8mm, Blendr compatible, 7 degree
- Seat Post
- Bontrager alloy, 31.6mm, 12mm offset
- Tape/Grips
- Bontrager XR Endurance Comp, lock-on
Wheels & Tires
- Hubs
- Front: Formula DC-511, 6-bolt, Boost110<br>Rear: Bontrager Approved DC-3248, sealed bearing, alloy axle, 6-bolt, Shimano 8/9/10 freehub, Boost148
- Rear Tire
- Size XS, S: Bontrager XR3 Comp, wire bead, 30tpi, 27.5" x 2.35<br>Size M, L, XL: Bontrager XR3 Comp, wire bead, 30tpi, 29" x 2.30
- Axles
- Front: 12mm thru axle<br>Rear: 15mm thru axle
- Spokes
- 14g, stainless steel, black
- Wheel Size
- 27.5-inch / 29-inch
- Front Tire
- Size XS, S: Bontrager XR3 Comp, wire bead, 30tpi, 27.5" x 2.35<br>Size M, L, XL: Bontrager XR3 Comp, wire bead, 30tpi, 29" x 2.30
Pedals
- Pedals
- VP-536 nylon platform
E-System
- Display
- Bosch Purion Controller
- Battery
- Bosch PowerTube 500Wh
- Charger
- Bosch compact 2A, 100-240V
- Motor
- Bosch Performance CX, magnesium motor body, 250 watt, 75 Nm
Accessories
- Rims/Wheels
- Bontrager Connection, double-wall, 32-hole, 20mm width, presta valve
- Max Assisted Speed
- 20mph or 32km/h max assist
- Color
- Factory Orange/Lithium Grey
Weight & Sizing
- Size
- X-Small / Small / Medium / Large / X-Large
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Battery health
Request battery cycle count and any diagnostic report; older packs lose range and capacity.
Inspection
Motor warranty
Verify motor warranty status and any firmware updates from the manufacturer dealer.