Speed unavailable: wheel or tire size is missing or unclear.
Velopedia Bicycle Archive
2021 Kona Process X
Original specifications: 29" wheels · geometry for 4 published sizes.
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At a glance
Archive #900001971- Model year
- 2021
- Category
- Mountain
- Original MSRP
- $5,199.00
- Sizes
- S, M, L, XL
- Colors
- Gloss Metallic Black w/ Gold & Black Decals
- Geometry
- 4 manufacturer sizes
- In this record
- 22 specifications · archived image · original MSRP · geometry
Model history 2 other years
Browse other years
Compare side by side
Identification clues
2021 archived details
- Published colors
- Gloss Metallic Black w/ Gold & Black Decals
- Frame
- Carbon Fiber
Clues, not proof of model year. Colors vary and components may have been replaced.
Original buildCarbon Fiber · 29"
Frameset
| Frame Construction | Kona Carbon 161mm Travel |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | Fox 38 Performance Grip Damper 170mm |
| Rear Shock | Fox DPX2 Performance Elite Trunnion |
Drivetrain
| Shifters | Shimano XT 12spd |
|---|---|
| Rear Derailleur | Shimano XT 12spd |
| Crankset | Shimano Deore; Chainring: 32t |
| Bottom Bracket | Shimano PF92 |
| Cassette | Shimano SLX 10-51t 12spd |
| Chain | Shimano Deore 12spd |
Brakes
| Brakes | Brake Calipers: Shimano Deore 4 Piston; Front Brake Rotor: Shimano RT66 203mm; Rear Brake Rotor: Shimano RT66 203mm; Brake Levers: Shimano Deore |
|---|
Cockpit & Contact Points
| Headset | FSA Orbit 1.5 EP ZS |
|---|---|
| Handlebar | Kona XC/BC 35 |
| Stem | Kona XC/BC 35 |
| Saddle | WTB Volt |
| Seatpost | TranzX Dropper +RAD Internal w/ Shimano Lever 31.6mm |
Wheels & Tires
| Hubs | (F) DT Swiss 370 110x15mm / (R) DT Swiss 370 148x12mm |
|---|---|
| Rims | WTB KOM Trail i30 TCS |
| Spokes | Stainless Black 14g |
| Front Tire | Maxxis Assegai EXO+ TR 3C 29x2.5" WT |
| Rear Tire | Maxxis Minion DHR II EXO+ TR 3C 29x2.4" WT (27.5x2.4" WT size S) |
| Wheel Size | 29" |
No specifications match. Try a component name or clear your search.
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 15 measurements
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 380 mm | 380 mm | 420 mm | 450 mm |
| Top tube | 569 mm | 594 mm | 623 mm | 662 mm |
| Head tube | 94 mm | 94 mm | 105 mm | 116 mm |
| Head-tube angle | 63.5° | 63.5° | 63.5° | 63.5° |
| Seat-tube angle | 78.2° | 78.2° | 78° | 77.9° |
| Chainstay / rear center | 435 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1213 mm | 1238 mm | 1268 mm | 1308 mm |
| Bottom-bracket drop | 20 mm | 30 mm | 30 mm | 30 mm |
| Bottom-bracket height | 345 mm | 345 mm | 345 mm | 345 mm |
| Reach | 440 mm | 465 mm | 490 mm | 525 mm |
| Stack | 615 mm | 615 mm | 625 mm | 635 mm |
| Standover height | 690 mm | 700 mm | 710 mm | 720 mm |
| Fork offset / rake | 44 mm | 44 mm | 44 mm | 44 mm |
| Front center | 779 mm | 804 mm | 834 mm | 874 mm |
| Fork length / axle-to-crown | 581 mm | 581 mm | 581 mm | 581 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
Rear tire: 29×2.4.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Try your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| Measure | Original | Your setup |
|---|---|---|
| Lowest ratio | — | — |
| Highest ratio | — | — |
| Total range | — | — |
| Lowest-gear speed | — | — |
| Highest-gear speed | — | — |
Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.
Parts & serviceability
Find replacement parts

Shimano Deore CN-M6100 Chain Silver, 12 Speed, 126 Links
Specification match

Maxxis Assegai EXO/Wide-Trail/TR 29in Tire Black/Tan, 29x2.5
Replacement option
More parts (7)Fewer parts
Chainring: 32t
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.
Service essentialsQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- Maxxis Assegai EXO+ TR 3C 29x2.5" WTCheck: Verify the fitted tire’s size marking and rim type.
- Rear tire
- Maxxis Minion DHR II EXO+ TR 3C 29x2.4" WT (27.5x2.4" WT size S)Check: Verify the rear size; it may differ from the front.
- Drivetrain
- 12-speedCheck: Match the installed drivetrain family, not just its speed count.
- Bottom bracket / shell
- Shimano PF92Check: Verify shell type and width, crank interface, and spindle length or spacers.
Not confirmed in this record: Seatpost diameter. Check the fitted parts for these details.
Bike-specific inspection checklist 22 checks based on 6 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2021 Kona Process X · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Kona Carbon 161mm Travel · Fork: Fox 38 Performance Grip Damper 170mm
Suspension
Evaluate the suspension →Archived: Fork: Fox 38 Performance Grip Damper 170mm · Rear shock: Fox DPX2 Performance Elite Trunnion
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano XT 12spd · Rear derailleur: Shimano XT 12spd · Crankset: Shimano Deore; Chainring: 32t · Bottom bracket: Shimano PF92 · Cassette: Shimano SLX 10-51t 12spd · Chain: Shimano Deore 12spd
Brakes
Inspect the brakes →Archived: Brakes: Brake Calipers: Shimano Deore 4 Piston; Front Brake Rotor: Shimano RT66 203mm; Rear Brake Rotor: Shimano RT66 203mm; Brake Levers: Shimano Deore
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29" · Rims: WTB KOM Trail i30 TCS · Hubs: (F) DT Swiss 370 110x15mm / (R) DT Swiss 370 148x12mm · Front tire: Maxxis Assegai EXO+ TR 3C 29x2.5" WT · Rear tire: Maxxis Minion DHR II EXO+ TR 3C 29x2.4" WT (27.5x2.4" WT size S)
Controls and contact points
Archived: Headset: FSA Orbit 1.5 EP ZS · Handlebar: Kona XC/BC 35 · Stem: Kona XC/BC 35 · Seatpost: TranzX Dropper +RAD Internal w/ Shimano Lever 31.6mm · Saddle: WTB Volt
Before and during the test ride
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.


