Velopedia Bicycle Archive

2021 Kona Process 153 27.5

Original specifications: 27.5" wheels · geometry for 4 published sizes.

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At a glance

Archive #900001973
Model year
2021
Category
Mountain
Original MSRP
$3,199.00
Sizes
S, M, L, XL
Colors
Satin Fatigue Green w/ Gloss Yellow, Nicotine & Flame Fade Decals
Geometry
4 manufacturer sizes
In this record
22 specifications · archived image · original MSRP · geometry
Model history 2 other years

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Identification clues

2021 archived details

Published colors
Satin Fatigue Green w/ Gloss Yellow, Nicotine & Flame Fade Decals
Frame
Aluminum

Clues, not proof of model year. Colors vary and components may have been replaced.

Campaign
Original buildAluminum · 27.5"

Manufacturer catalog

Published sizes and colors

4 sizes · 2 colors

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

SMLXL

Published colors

Satin Fatigue Green w/ Gloss YellowNicotine & Flame Fade Decals

Frameset

Frame ConstructionKona 6061 Aluminum Butted 153mm Travel
Frame MaterialAluminum
ForkRockShox Yari RC Motion Control DebonAir 160mm Tapered 110mm Spacing
Rear ShockRockShox Deluxe Select Plus Trunnion

Drivetrain

ShiftersSRAM SX-Eagle
Rear DerailleurSRAM NX-Eagle
CranksetSRAM SX-Eagle; Chainring: 32t X-Sync Eagle
Bottom BracketSRAM DUB PF92
CassetteSRAM NX-Eagle 11-50t 12spd
ChainSRAM SX-Eagle

Brakes

BrakesBrake Calipers: SRAM Guide T; Front Brake Rotor: SRAM Centerline 200mm; Rear Brake Rotor: SRAM Centerline 180mm; Brake Levers: SRAM Guide T

Cockpit & Contact Points

HeadsetFSA No.57B
HandlebarKona XC/BC 35
StemKona XC/BC 35
SaddleKona Trail
SeatpostTrans-X Dropper +RAD Internal 31.6mm

Wheels & Tires

Hubs(F) Formula 110x15mm / (R) Formula 148x12mm
RimsWTB ST I30 TCS 2.0
SpokesStainless Black 14g
Front TireMaxxis Assegai EXO TR DUAL 27.5x2.5" WT
Rear TireMaxxis Minion DHR II EXO TR DUAL 27.5x2.4" WT
Wheel Size27.5"

Geometry

4 sizes · 15 measurements

Frame measurements by size.

All geometry measurements4 sizes · 15 measurements
MeasurementSMLXL
Seat tube385 mm410 mm450 mm485 mm
Top tube569 mm599 mm628 mm667 mm
Head tube123 mm134 mm145 mm156 mm
Head-tube angle64.5°64.5°64.5°64.5°
Seat-tube angle77°76.9°76.7°76.6°
Chainstay / rear center430 mm430 mm430 mm430 mm
Wheelbase1184 mm1213 mm1243 mm1283 mm
Bottom-bracket drop12 mm12 mm12 mm12 mm
Bottom-bracket height348 mm348 mm348 mm348 mm
Reach430 mm455 mm480 mm515 mm
Stack605 mm615 mm625 mm635 mm
Standover height690 mm700 mm710 mm720 mm
Fork offset / rake37 mm37 mm37 mm37 mm
Front center754 mm784 mm814 mm853 mm
Fork length / axle-to-crown552 mm552 mm552 mm552 mm

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

All published sizes32T · 11–50T · 12-speed
Lowest0.64:1 Highest2.91:1 Total range455%
Estimated speed At 90 RPM Lowest gear4.8 mph Highest gear21.7 mph

Rear tire: 27.5×2.4.

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 other gearing

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Your gearing setup
Gears

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Gear, dimension and cadence changes update results automatically.

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
SRAM SX-Eagle
Retailer offers
Front tire · Original
Maxxis Assegai EXO TR DUAL 27.5x2.5" WT
Retailer offers
Rear tire · Original
Maxxis Minion DHR II EXO TR DUAL 27.5x2.4" WT
Retailer offers
More parts (8)Fewer parts
Bottom bracket · Original
SRAM DUB PF92 Before ordering: Use the spacer setup for your crank.
Retailer offers
Cassette · Original
SRAM NX-Eagle 11-50t 12spd
Crankset · Original
SRAM SX-Eagle

Chainring: 32t X-Sync Eagle

Rear derailleur · Original
SRAM NX-Eagle
Shifters · Original
SRAM SX-Eagle
Seatpost · Original
Trans-X Dropper +RAD Internal 31.6mm
Headset · Original
FSA No.57B
Rims · Original
WTB ST i30 TCS 2.0

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 DUAL 27.5x2.5" WTCheck: Verify the fitted tire’s size marking and rim type.
Rear tire
Maxxis Minion DHR II EXO TR DUAL 27.5x2.4" WTCheck: Verify the rear size; it may differ from the front.
Drivetrain
12-speedCheck: Match the installed drivetrain family, not just its speed count.
Seatpost diameter
31.6 mmCheck: Read the post’s diameter marking; seat-clamp size differs.
Bottom bracket / shell
SRAM DUB PF92Check: Verify shell type and width, crank interface, and spindle length or spacers.
Bike-specific inspection checklist 22 checks based on 6 archived component groups Open checklistClose checklist
0 of 22 checked Progress stays in this browser for this record.

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.

Archived: 2021 Kona Process 153 27.5 · Mountain · Published sizes: S, M, L, XL

Archived: Frame: Kona 6061 Aluminum Butted 153mm Travel · Fork: RockShox Yari RC Motion Control DebonAir 160mm Tapered 110mm Spacing

Archived: Fork: RockShox Yari RC Motion Control DebonAir 160mm Tapered 110mm Spacing · Rear shock: RockShox Deluxe Select Plus Trunnion

Archived: Shifters: SRAM SX-Eagle · Rear derailleur: SRAM NX-Eagle · Crankset: SRAM SX-Eagle; Chainring: 32t X-Sync Eagle · Bottom bracket: SRAM DUB PF92 · Cassette: SRAM NX-Eagle 11-50t 12spd · Chain: SRAM SX-Eagle

Archived: Brakes: Brake Calipers: SRAM Guide T; Front Brake Rotor: SRAM Centerline 200mm; Rear Brake Rotor: SRAM Centerline 180mm; Brake Levers: SRAM Guide T

Archived: Wheel size: 27.5" · Rims: WTB ST i30 TCS 2.0 · Hubs: (F) Formula 110x15mm / (R) Formula 148x12mm · Front tire: Maxxis Assegai EXO TR DUAL 27.5x2.5" WT · Rear tire: Maxxis Minion DHR II EXO TR DUAL 27.5x2.4" WT

Controls and contact points

Archived: Headset: FSA No.57B · Handlebar: Kona XC/BC 35 · Stem: Kona XC/BC 35 · Seatpost: Trans-X Dropper +RAD Internal 31.6mm · Saddle: Kona Trail

Before and during the test ride

Follow the full used-bike inspection order →

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Campaign

Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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