Velopedia Bicycle Archive
2018 Cannondale Jekyll 1
Original specifications: 27.5" wheels · geometry for 4 published sizes.
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At a glance
- Model year
- 2018
- Category
- Mountain
- Sizes
- S, M, L, XL
- Colors
- Jet Black w/ Nearly Black and Surf Blue - Gloss (BBQ)
- Geometry
- 4 manufacturer sizes
- In this record
- 22 specifications · archived image · geometry
- Archive ID
- 900002627
Model history 1 other year
Original buildCarbon · 27.5"
Frameset
| Frame Construction | All-New Jekyll, 165mm travel, BallisTec Carbon Frame and Swingarm, carbon shock link, Ai offset drivetrain, ISCG05, PF30, flat mount brake, tapered headtube |
|---|---|
| Frame Material | Carbon |
| Fork | Fox Factory Float 36, 27.5, 170mm, HSC/LSC, 3-pos Adj., Kashima coating, 110x15, tapered steerer, 44mm offset |
| Rear Shock | Fox Factory Float X EVOL w/Gemini remote-actuated dual mode air spring system, Flow Mode - 165mm / Hustle Mode - 130mm, Kashima coating, 3-Pos lever |
Drivetrain
| Shifters | SRAM X01 Eagle 12-speed, trigger |
|---|---|
| Rear Derailleur | SRAM XX1 Eagle 12-speed |
| Crankset | Truvativ Descendant Carbon Eagle, BB30 w/ custom Ai offset, 30t |
| Bottom Bracket | Cannondale Alloy PressFit30 |
| Rear Cogs | SRAM XG1295 Eagle 10-50t, 12-speed |
| Chain | SRAM X01 Eagle 12-speed w/ PowerLink |
Brakes
| Brakes | SRAM Guide RSC hydro disc, Centerline rotors 200/180mm |
|---|
Cockpit & Contact Points
| Headset | Integrated, 1-1/8 to 1.5”, sealed angular contact bearings |
|---|---|
| Handlebar | Cannondale C1 Carbon Riser, 15mm rise, 4° up, 9° back, 31.8, 780mm |
| Stem | Cannondale C1, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 0°, 35mm |
| Saddle | Fabric Scoop Shallow Race with Titanium rails |
| Seatpost | RaceFace Turbine dropper, Internal Routing, 31.6, Travel - 125mm S / 150mm M-XL |
Wheels & Tires
| Hubs | HollowGram 30 - 110x15 thru front / 148x12 thru rear w/Ai offset, Maxle Ultimate |
|---|---|
| Rims | Cannondale HollowGram 30 Carbon, 30mm inner, Tubeless Ready 27.5” |
| Spokes | 2.0/1.8/2.0 Stainless, Straight Pull |
| Front Tire | Maxxis Minion DHF 27.5x2.5” front, DHR II 2.4” rear, 3C Compound, EXO puncture protection, folding , Tubeless Ready |
| Rear Tire | Maxxis Minion DHF 27.5x2.5” front, DHR II 2.4” rear, 3C Compound, EXO puncture protection, folding , Tubeless Ready |
| Wheel Size | 27.5" |
Geometry
Frame measurements by size.
Published frame view
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 16 measurements
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 400 mm | 430 mm | 460 mm | 520 mm |
| Effective top tube | 584 mm | 609 mm | 634 mm | 662 mm |
| Top tube | 537 mm | 562 mm | 587 mm | 621 mm |
| Head tube | 102 mm | 115 mm | 127 mm | 140 mm |
| Head-tube angle | 65° | 65° | 65° | 65° |
| Seat-tube angle | 75° | 75° | 75° | 75° |
| Chainstay / rear center | 420 mm | 420 mm | 420 mm | 420 mm |
| Wheelbase | 1160 mm | 1187 mm | 1214 mm | 1244 mm |
| Bottom-bracket drop | 8 mm | 8 mm | 8 mm | 8 mm |
| Bottom-bracket height | 349 mm | 349 mm | 349 mm | 349 mm |
| Reach | 425 mm | 447 mm | 469 mm | 494 mm |
| Stack | 592 mm | 604 mm | 615 mm | 626 mm |
| Standover height | 750 mm | 758 mm | 767 mm | 775 mm |
| Fork offset / rake | 44 mm | 44 mm | 44 mm | 44 mm |
| Front center | 740 mm | 767 mm | 794 mm | 824 mm |
| Trail | 114 mm | 114 mm | 114 mm | 114 mm |
Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
Find replacement parts

Maxxis Minion DHF Wide Trail Dual Compound/EXO/TR 27.5in Tire Dual Compound/EXO/TR, 27.5x2.5
27.5x2.5
Replacement option · verify fit
More parts (2)

Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
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: 2018 Cannondale Jekyll 1 · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: All-New Jekyll, 165mm travel, BallisTec Carbon Frame and Swingarm, carbon shock link, Ai offset drivetrain, ISCG05, PF30, flat mount brake, tapered headtube · Fork: Fox Factory Float 36, 27.5, 170mm, HSC/LSC, 3-pos Adj., Kashima coating, 110x15, tapered steerer, 44mm offset
Suspension
Evaluate the suspension →Archived: Fork: Fox Factory Float 36, 27.5, 170mm, HSC/LSC, 3-pos Adj., Kashima coating, 110x15, tapered steerer, 44mm offset · Rear shock: Fox Factory Float X EVOL w/Gemini remote-actuated dual mode air spring system, Flow Mode - 165mm / Hustle Mode - 130mm, Kashima coating, 3-Pos lever
Drivetrain
Check drivetrain wear →Archived: Shifters: SRAM X01 Eagle 12-speed, trigger · Rear derailleur: SRAM XX1 Eagle 12-speed · Crankset: Truvativ Descendant Carbon Eagle, BB30 w/ custom Ai offset, 30t · Bottom bracket: Cannondale Alloy PressFit30 · Rear cogs: SRAM XG1295 Eagle 10-50t, 12-speed · Chain: SRAM X01 Eagle 12-speed w/ PowerLink
Brakes
Inspect the brakes →Archived: Brakes: SRAM Guide RSC hydro disc, Centerline rotors 200/180mm
Wheels and tires
Check wheels and tires →Archived: Wheel size: 27.5" · Rims: Cannondale HollowGram 30 Carbon, 30mm inner, Tubeless Ready 27.5” · Hubs: HollowGram 30 - 110x15 thru front / 148x12 thru rear w/Ai offset, Maxle Ultimate · Front tire: Maxxis Minion DHF 27.5x2.5” front, DHR II 2.4” rear, 3C Compound, EXO puncture protection, folding , Tubeless Ready · Rear tire: Maxxis Minion DHF 27.5x2.5” front, DHR II 2.4” rear, 3C Compound, EXO puncture protection, folding , Tubeless Ready
Controls and contact points
Archived: Headset: Integrated, 1-1/8 to 1.5”, sealed angular contact bearings · Handlebar: Cannondale C1 Carbon Riser, 15mm rise, 4° up, 9° back, 31.8, 780mm · Stem: Cannondale C1, 3D Forged 6061 Alloy, 1-1/8”, 31.8, 0°, 35mm · Seatpost: RaceFace Turbine dropper, Internal Routing, 31.6, Travel - 125mm S / 150mm M-XL · Saddle: Fabric Scoop Shallow Race with Titanium rails
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.




