Velopedia Bicycle Archive

2018 Kona Blast

Original specifications: 26" wheels · geometry for 5 published sizes.

Share owner experience

Planning to sell? Draft your listing

At a glance

Archive #900003152
Model year
2018
Category
Mountain
Sizes
XS (26"), S, M, L, XL
Colors
Matt Charcoal & Black w/ Black & Orange Decals
Geometry
5 manufacturer sizes
In this record
23 specifications · archived image · geometry
Model history 19 other years

Browse other years

Compare side by side

Identification clues

2018 archived details

Published colors
Matt Charcoal & Black w/ Black & Orange Decals
Frame
Aluminum

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

Campaign
Original buildAluminum · 26"

Manufacturer catalog

Published sizes and colors

5 sizes · 1 color

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

Published sizes

XS (26")SMLXL

Published colors

Matt Charcoal & Black w/ Black & Orange Decals

Frameset

Frame ConstructionKona Race Light 6061 Aluminum Butted
Frame MaterialAluminum
ForkRockShox 30 Silver TK Solo Air 100mm

Drivetrain

ShiftersShimano Altus
Front DerailleurShimano Alivio
Rear DerailleurShimano Deore
CranksetShimano Alivio; Chainring: 22/30/40t
Bottom BracketShimano ES300
CassetteShimano HG200 11-34t 9spd
ChainKMC X9
PedalsKona JS2

Brakes

BrakesBrake Calipers: Shimano Hydraulic; Front Brake Rotor: Shimano RT10 180mm (centerlock); Rear Brake Rotor: Shimano RT10 160mm (centerlock); Brake Levers: Shimano Hydraulic

Cockpit & Contact Points

HeadsetFSA No.57B
HandlebarKona XC/BC Riser
StemKona XC
SaddleKona XC
SeatpostKona Thumb 31.6mm

Wheels & Tires

Hubs(F) Formula 100x9mm / (R) Shimano 135x10mm
RimsWTB STP I25
SpokesSandvik Stainless Black 15g fr / 14g rr
Front TireSchwalbe Nobby Nic 27.5/26x2.25"
Rear TireSchwalbe Nobby Nic 27.5/26x2.25"
Wheel Size26"

Geometry

5 sizes · 15 measurements

Frame measurements by size.

All geometry measurements5 sizes · 15 measurements
MeasurementXSSMLXL
Seat tube331 mm370 mm420 mm470 mm530 mm
Top tube555 mm570 mm599 mm626 mm660 mm
Head tube100 mm100 mm115 mm125 mm140 mm
Head-tube angle68°68.5°68.5°68.5°68.5°
Seat-tube angle74°74°74°74°74°
Chainstay / rear center425 mm435 mm435 mm435 mm435 mm
Wheelbase1075 mm1091 mm1121 mm1149 mm1185 mm
Bottom-bracket drop30 mm50 mm50 mm50 mm50 mm
Bottom-bracket height303 mm304 mm304 mm304 mm304 mm
Reach395 mm402 mm427 mm451 mm481 mm
Stack559 mm587 mm601 mm610 mm624 mm
Standover height677 mm715 mm725 mm730 mm750 mm
Fork offset / rake39 mm42 mm42 mm42 mm42 mm
Front center652 mm660 mm691 mm719 mm754 mm
Fork length / axle-to-crown483 mm490 mm490 mm490 mm490 mm

Dimensions as recorded.

Gearing

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

RPM

RPM = pedal turns per minute.

XS40/30/22T · 11–34T · 9-speed
Lowest0.65:1 Highest3.64:1 Total range562%
Estimated speed At 90 RPM Lowest gear4.6 mph Highest gear25.8 mph

Rear tire: 26×2.25.

S, M, L, XL40/30/22T · 11–34T · 9-speed
Lowest0.65:1 Highest3.64:1 Total range562%
Estimated speed At 90 RPM Lowest gear4.8 mph Highest gear26.8 mph

Rear tire: 27.5×2.25.

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
KMC X9
Retailer offers
Seatpost · Original
Kona Thumb 31.6mm
Retailer offers
Other replacement options (1)
Cassette · Original
Shimano HG200 11-34t 9spd
More parts (8)Fewer parts
Front tire · Original
Schwalbe Nobby Nic 27.5/26x2.25"
Bottom bracket · Original
Shimano ES300
Crankset · Original
Shimano Alivio

Chainring: 22/30/40t

Front derailleur · Original
Shimano Alivio
Rear derailleur · Original
Shimano Deore
Shifters · Original
Shimano Altus
Headset · Original
FSA No.57B
Rims · Original
WTB STP i25

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
Schwalbe Nobby Nic 27.5/26x2.25"Check: Verify the fitted tire’s size marking and rim type.
Rear tire
Schwalbe Nobby Nic 27.5/26x2.25"Check: Verify the rear size; it may differ from the front.
Drivetrain
9-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
Shimano ES300Check: Verify shell type and width, crank interface, and spindle length or spacers.
Bike-specific inspection checklist 20 checks based on 6 archived component groups Open checklistClose checklist
0 of 20 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: 2018 Kona Blast · Mountain · Published sizes: XS (26"), S, M, L, XL

Archived: Frame: Kona Race Light 6061 Aluminum Butted · Fork: RockShox 30 Silver TK Solo Air 100mm

Archived: Fork: RockShox 30 Silver TK Solo Air 100mm

Archived: Shifters: Shimano Altus · Front derailleur: Shimano Alivio · Rear derailleur: Shimano Deore · Crankset: Shimano Alivio; Chainring: 22/30/40t · Bottom bracket: Shimano ES300 · Cassette: Shimano HG200 11-34t 9spd · Chain: KMC X9

Archived: Brakes: Brake Calipers: Shimano Hydraulic; Front Brake Rotor: Shimano RT10 180mm (centerlock); Rear Brake Rotor: Shimano RT10 160mm (centerlock); Brake Levers: Shimano Hydraulic

Archived: Wheel size: 26" · Rims: WTB STP i25 · Hubs: (F) Formula 100x9mm / (R) Shimano 135x10mm · Front tire: Schwalbe Nobby Nic 27.5/26x2.25" · Rear tire: Schwalbe Nobby Nic 27.5/26x2.25"

Controls and contact points

Archived: Headset: FSA No.57B · Handlebar: Kona XC/BC Riser · Stem: Kona XC · Seatpost: Kona Thumb 31.6mm · Saddle: Kona XC · Pedals: Kona JS2

Before and during the test ride

Follow the full used-bike inspection order →

My Garage

Velopedia

Enter your email and Velopedia will send a private sign-in link. No password required.

Have you owned this model?Help preserve its real-world history by sharing your owner experience.

Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.

Add fit, maintenance and buyer detailsOptional · five additional fields

Your contribution goes directly to Velopedia’s private review queue. We’ll email an optional confirmation link plus a private edit and withdrawal link, but you do not need to confirm your email before an administrator can review or approve the submission.

Already contributed? Send me a fresh private edit link

For privacy, Velopedia shows the same confirmation whether or not an experience exists.

Checking current listings…

Find this bike on eBay

Search eBay US; check the model year, size and installed components. We may earn a commission from purchases.

Campaign

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

Scroll to Top