Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
BMC
2021 BMC Blast 27
Value Guide market data · 2021 BMC Blast 27
12-month trend
11%
Direction and magnitude, not judgment
vs. category average
3%
Holds value better than category avg
Price over time - 2021 BMC Blast 27
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Blast model years
2021 Blast 27 lineup
Overview
About this bike
2021 BMC Blast 27 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- Suntour XCM-LO-DS, 100mm
- Frame
- Blast 27", 1 1/8" Head Tube, BSA Threaded Bottom Bracket, 160mm Post Mount, 9 x 135mm QR
Drivetrain
- Groupset
- Shimano Deore
- Cassette
- Lightweight Forged Alloy Cranks, 32T 1x Specific Narrow Wide chainring, 170mm
- Chain
- Shimano CN-HG54
- Chainrings
- 32T 1x Specific Narrow Wide
- Crankset
- Lightweight Forged Alloy Cranks, 170mm
- Rear Derailleur
- Shimano Deore 10 spd
- Shifters
- Shimano Deore 10 spd
Brakes
- Brakes
- Shimano BR-MT200 / Shimano RT-30 Rotors (160/160)
Cockpit
- Handlebar
- BMC MRB03 700mm
- Saddle
- Velo VL3381
- Seatpost
- BMC MSP03, 27.2mm
- Stem
- BMC MSM03
Wheels & Tires
- Front Tire
- Maxxis Ardent Race 27.5 x 2.20
- Hubs
- Shimano HB-RM35 / FH-RM35
- Rims
- XCD23
Pedals
- Pedals
- Sold separately
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
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.