Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Niner
2021 Niner RIP 9 RDO 4-Star 27.5
Value Guide market data · 2021 Niner RIP 9 RDO 4-Star 27.5
12-month trend
11%
Direction and magnitude, not judgment
vs. category average
8%
Drops faster than category avg
Price over time - 2021 Niner RIP 9 RDO 4-Star 27.5
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All RIP model years
2021 RIP 9 RDO 4-Star 27.5 lineup
Overview
About this bike
2021 Niner RIP 9 RDO 4-Star 27.5 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- Fox 36 Float Factory Grip 2 EVOL, HSC, LSC, HSR, LSR, Kashima Coat, 150mm, 110x15mm, 37mm Offset
- Frame
- Niner RDO Carbon Fiber, 140mm Travel, Geo Flip Chip, Rib Cage Construction, Full Sleeve Cable Routing, Enduro Max Black Oxide Pivot Bearings
- Rear Shock
- Fox Float DPX2 Factory EVOL 3 Position w/Adjust, Kashima Coat
Drivetrain
- Groupset
- Shimano XT
- Bottom Bracket
- Raceface Threaded
- Cassette
- Shimano XT M8100 12sp, 10-51T
- Chain
- Shimano XT M8100 w/Quicklink
- Crankset
- Raceface NEXT R Carbon 12sp, 32T
- Rear Derailleur
- RD-M8100, XT, SGS 12-speed
- Shifters
- Shimano XT M8100 SGS 12sp
Brakes
- Brake Levers
- Shimano XT M8100
- Brakes
- Shimano XT M8120, Metal Pad w/Fin
- Rotors
- 180/180 Centerline Rotors
Cockpit
- Handlebar
- Race Face NEXT R 800mm Wide, 35mm Rise, 35mm Clamp
- Headset
- Niner Internal ZS SHIS Description ZS44/28.6|ZS56/40
- Saddle
- Niner Custom TR With CrN-Ti Rails, Printed Niner Graphic
- Seatpost
- KS LEV Si (XS/S-100mm, M/L/XL-150mm)
- Stem
- Race Face Turbine R 40mm, 35mm Clamp
- Grips
- Niner Grrrips L/O Flanged Soft Compound
Wheels & Tires
- Front Tire
- Front: Maxxis Minion DHF 3C/EXO/TR 2.5" WT, Rear: Maxxis Aggressor 2C/EXO/TR 2.5" WT
- Wheel Set
- Front: DT Swiss M1900 Spline 30, DT370 Center Lock Hub 110x15mm, Rear: DT Swiss M1900 Spline 30, DT370 Center Lock Hub 148x12mm
Pedals
- Pedals
- Sold separately
Accessories
- Accessories & Extras
- Stans No Tubes Sealant (2 x 2oz Bottles)
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.