Rear tire: 29×2.3.
Velopedia Bicycle Archive
2021 Specialized S-Works Epic
Original specifications: geometry for 4 published sizes.
Selling this bike? Get the spec link and selling options
At a glance
- Model year
- 2021
- Category
- Mountain
- Original MSRP
- $12,000.00
- Sizes
- S, M, L, XL
- Colors
- Gloss Red Tint Fade Over Brushed Silver/Tarmac Black/White W/ Gold Pearl, Satin/gloss Carbon/color Run Silver - Green Chameleon
- Geometry
- 4 manufacturer sizes
- In this record
- 21 specifications · 8 archived images · original MSRP · geometry
- Archive ID
- 900004317
Model history 5 other years
Checking your bike’s model year? Compare its frame details and original finish with nearby years.
- Published colors
- Gloss Red Tint Fade Over Brushed Silver/Tarmac Black/White W/ Gold Pearl, Satin/gloss Carbon/color Run Silver - Green Chameleon
- Frame
- Carbon Fiber
Colors can vary by market and components can be replaced. These are identification clues, not proof of the frame’s year.
Original buildCarbon Fiber
Frameset
| Frame Construction | S-Works FACT 12m Carbon, Progressive XC Race Geometry, Rider-First Engineered™, threaded BB, 12x148mm rear spacing, internal cable routing, 100mm of travel |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | RockShox SID SL ULTIMATE BRAIN, Top-Adjust Brain damper, Debon Air, 15x110mm, 44mm offset, 100mm Travel |
| Rear Shock | RockShox-Specialized BRAIN, Rx XC Tune, 5 Position Platform Adjust, Rebound Adjust, Integrated Extension, 265x52.5mm |
Drivetrain
| Shifters | SRAM AXS Eagle Controller |
|---|---|
| Rear Derailleur | SRAM XX1 Eagle AXS |
| Crankset | QUARQ XX1 Eagle Power Meter, Boost™ 148, DUB, 170/175mm, 32T |
| Bottom Bracket | SRAM DUB, BSA 73mm, Threaded |
| BB Shell Width | 73 mm |
| Cassette | SRAM XG-1299 Eagle, 10-50t |
| Chain | SRAM XX1 Eagle |
Brakes
| Brakes | (F) SRAM Level Ultimate, 2-piston caliper, hydraulic disc / (R) SRAM Level Ultimate, 2-piston caliper, hydraulic disc |
|---|
Cockpit & Contact Points
| Handlebar | S-Works Carbon XC Mini Rise, 6-degree upsweep, 8-degree backsweep, 10mm rise, 760mm, 31.8mm |
|---|---|
| Stem | S-Works SL, alloy, titanium bolts, 6-degree rise |
| Saddle | Body Geometry S-Works Power, carbon fiber rails, carbon fiber base |
| Seatpost | S-Works FACT carbon, 10mm offset, 30.9mm |
Wheels & Tires
| Hubs | (F) Roval Control SL, DT Swiss Internals, Ceramic Bearings, 6-bolt, 15mm thru-axle, 110mm spacing, Torque caps, 24h straight pull t-head / (R) Roval Control SL, DT Swiss 180 Internals, DT Swiss Ratchet EXP, Ceramic bearings, 12mm thru-axle, 148mm spacing, 24h straight-pull |
|---|---|
| Rims | Roval Control SL, Carbon offset design, 29mm internal width, 4mm hook width, Tubeless ready, 24h |
| Spokes | DT Swiss Aerolite T-head |
| Front Tire | Fast Trak, Control casing, GRIPTON® compound, 60 TPI, 2Bliss Ready, 29x2.3" |
| Rear Tire | Fast Trak, Control casing, GRIPTON® compound, 60 TPI, 2Bliss Ready, 29x2.3" |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 20 measurements
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 400 mm | 430 mm | 470 mm | 520 mm |
| Effective top tube | 563 mm | 598 mm | 626 mm | 656 mm |
| Head tube | 95 mm | 100 mm | 115 mm | 135 mm |
| Head-tube angle | 67.5° | 67.5° | 67.5° | 67.5° |
| Seat-tube angle | 75.8° | 75.5° | 75.5° | 75.5° |
| Chainstay / rear center | 433 mm | 433 mm | 433 mm | 433 mm |
| Wheelbase | 1116 mm | 1148 mm | 1179 mm | 1211 mm |
| Bottom-bracket drop | 48 mm | 48 mm | 48 mm | 48 mm |
| Bottom-bracket height | 324 mm | 324 mm | 324 mm | 324 mm |
| Reach | 415 mm | 445 mm | 470 mm | 495 mm |
| Stack | 586 mm | 591 mm | 605 mm | 623 mm |
| Standover height | 763 mm | 766 mm | 776 mm | 788 mm |
| Fork offset / rake | 44 mm | 44 mm | 44 mm | 44 mm |
| Front center | 687 mm | 719 mm | 750 mm | 782 mm |
| Trail | 106 mm | 106 mm | 106 mm | 106 mm |
| Fork length / axle-to-crown | 505 mm | 505 mm | 505 mm | 505 mm |
| Seatpost length | 350 mm | 400 mm | 400 mm | 400 mm |
| Crank length | 170 mm | 175 mm | 175 mm | 175 mm |
| Stem length | 60 mm | 70 mm | 70 mm | 70 mm |
| Handlebar width | 760 mm | 760 mm | 760 mm | 760 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
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.
| 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

SRAM XX1 Eagle 12-Speed Chain Copper, 126 links
10-50t

SRAM XG-1299 XX1 Eagle 12-Speed Cassette Gold, 10-50t
BSA 73mm, Threaded
Before ordering: Use the spacer setup for your crank.
SRAM DUB BSA Bottom Bracket One Color, 68mm/73mm
Replacement option
More parts (5)Fewer parts

SRAM XX1 Eagle AXS 12-Speed Rear Derailleur Black, One Size
Control casing, GRIPTON® compound, 60 TPI, 2Bliss Ready, 29x2.3"
Replacement search: 29x2.3 bicycle tire Before ordering: Check rim type and tire clearance.10mm offset, 30.9mm
Carbon offset design, 29mm internal width, 4mm hook width, Tubeless ready, 24h
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 essentials
Start with the original build, then check what is fitted to your bike today.
- Front tire
- Fast Trak, Control casing, GRIPTON® compound, 60 TPI, 2Bliss Ready, 29x2.3"Check the fitted tire’s size and rim type; replacements may differ from the original.
- Rear tire
- Fast Trak, Control casing, GRIPTON® compound, 60 TPI, 2Bliss Ready, 29x2.3"Read the rear tire’s size marking. Do not assume it matches the front.
- Drivetrain
- Not confirmed in this recordMatch the chain or belt to the installed drivetrain family; speed count alone is not a fit guarantee.
- Seatpost diameter
- 30.9 mmCheck the diameter stamped on the post. A seat-clamp diameter is a different measurement.
- Bottom bracket / shell
- SRAM DUB, BSA 73mm, Threaded · 73 mmConfirm shell type and width, crank interface, and spindle length or spacers before ordering.
Bike-specific inspection checklist 23 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 Specialized S-Works Epic · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: S-Works FACT 12m Carbon, Progressive XC Race Geometry, Rider-First Engineered™, threaded BB, 12x148mm rear spacing, internal cable routing, 100mm of travel · Fork: RockShox SID SL ULTIMATE BRAIN, Top-Adjust Brain damper, Debon Air, 15x110mm, 44mm offset, 100mm Travel
Suspension
Evaluate the suspension →Archived: Fork: RockShox SID SL ULTIMATE BRAIN, Top-Adjust Brain damper, Debon Air, 15x110mm, 44mm offset, 100mm Travel · Rear shock: RockShox-Specialized BRAIN, Rx XC Tune, 5 Position Platform Adjust, Rebound Adjust, Integrated Extension, 265x52.5mm
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM AXS Eagle Controller · Rear derailleur: SRAM XX1 Eagle AXS · Crankset: QUARQ XX1 Eagle Power Meter, Boost™ 148, DUB, 170/175mm, 32T · Bottom bracket: SRAM DUB, BSA 73mm, Threaded · Cassette: SRAM XG-1299 Eagle, 10-50t · Chain: SRAM XX1 Eagle
Brakes
Inspect the brakes →Archived: Brakes: (F) SRAM Level Ultimate, 2-piston caliper, hydraulic disc / (R) SRAM Level Ultimate, 2-piston caliper, hydraulic disc
Wheels and tires
Check wheels and tires →Archived: Rims: Roval Control SL, Carbon offset design, 29mm internal width, 4mm hook width, Tubeless ready, 24h · Front tire: Fast Trak, Control casing, GRIPTON® compound, 60 TPI, 2Bliss Ready, 29x2.3" · Rear tire: Fast Trak, Control casing, GRIPTON® compound, 60 TPI, 2Bliss Ready, 29x2.3"
Controls and contact points
Archived: Handlebar: S-Works Carbon XC Mini Rise, 6-degree upsweep, 8-degree backsweep, 10mm rise, 760mm, 31.8mm · Stem: S-Works SL, alloy, titanium bolts, 6-degree rise · Seatpost: S-Works FACT carbon, 10mm offset, 30.9mm · Saddle: Body Geometry S-Works Power, carbon fiber rails, carbon fiber base
Before and during the test ride
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Gallery8 images
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





