Lowest0.69:1
Highest3.23:1
Total range470%
Estimated speed At 90 RPM
Lowest gear
Highest gear
Uses front tire 26×1.95; rear size isn’t listed.
Velopedia Bicycle Archive
2005 Jamis Explorer 3.0
Original specifications: Shimano Acera · 8-speed · mechanical rear derailleur · 26" wheels · 33.25 lb published weight.
Planning to sell? Draft your listing
At a glance
Archive #93140- Model year
- 2005
- Category
- City & Commuter
- Original MSRP
- $389.95
- Sizes
- 13.5", 15.5", 18", 21", womens 14.5", womens 17.5"
- Colors
- Red/Silver, Silver/Black, Silver/Aqua
- Weight
- 33.25 lb
- In this record
- 27 specifications · archived image · original MSRP
Model history 5 other years
Browse other years
Compare side by side
Identification clues
2005 archived details
- Published colors
- Red/Silver, Silver/Black, Silver/Aqua
- Frame
- 6061 T6 aluminum
- Original equipment
- Comfort Mix
Clues, not proof of model year. Colors vary and components may have been replaced.
Original build6061 T6 aluminum · Comfort Mix · 26" wheels
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | 6061 T6 aluminum |
| Fork | Rock Shox Metro GPS, 50mm travel |
| Fork Material | Aluminum/magnesium, single crown |
Drivetrain
| Component Group | Comfort Mix |
|---|---|
| Shifters | Shimano Acera EF29 |
| Front Derailleur | Shimano Acera, bottom-pull/clamp-on 31.8mm |
| Rear Derailleur | Shimano Acera |
| Crankset | RPM forged, 22/32/42 teeth |
| Bottom Bracket | Sealed, 117.5mm spindle |
| BB Shell Width | 68mm English |
| Rear Cogs | 8-speed, 13 - 32 teeth |
| Chain | KMC IG-51, 1/2 x 3/32" |
| Pedals | Resin platform |
Brakes
| Brakes | Tektro linear-pull brakes, Tektro Tenera levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless steel |
|---|---|
| Handlebar | Steel, 1" rise |
| Handlebar Extensions | Not included |
| Stem | Aluminum, adjustable |
| Saddle | Jamis Comfort |
| Seatpost | Aluminum suspension, 27.2mm diameter |
Wheels & Tires
| Hubs | Aluminum, Q/R |
|---|---|
| Rims | Weinmann CN-520, 36-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 26 x 1.95" Kenda Komfort |
| Wheel Size | 26" wheels |
No specifications match. Try a component name or clear your search.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
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.
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
Aluminum suspension
27.2mm diameter
Retailer offers
Cane Creek Thudbuster ST Seatpost Black, 27.2mm
Replacement option
Tektro linear-pull brakes
Tektro Tenera levers
More parts (2)Fewer parts
Shimano Acera
Shimano Acera EF29
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.
Parts and service referenceQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- 26 x 1.95" Kenda Komfort
- Drivetrain
- 8-speed
- Seatpost diameter
- 27.2 mm
- Bottom bracket / shell
- Sealed, 117.5mm spindle · 68mm English
Equipment inspection checks 11 checks based on 6 archived component groups Open equipment checksClose equipment checks
Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.
Full used-bike inspection guide →
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: Rock Shox Metro GPS, 50mm travel · Aluminum/magnesium, single crown
Suspension
Evaluate the suspension →Archived: Fork: Rock Shox Metro GPS, 50mm travel
Drivetrain
Check drivetrain wear →Archived: Group: Comfort Mix · Shifters: Shimano Acera EF29 · Front derailleur: Shimano Acera, bottom-pull/clamp-on 31.8mm · Rear derailleur: Shimano Acera · Crankset: RPM forged, 22/32/42 teeth · Bottom bracket: Sealed, 117.5mm spindle · Rear cogs: 8-speed, 13 - 32 teeth · Chain: KMC IG-51, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Tektro linear-pull brakes, Tektro Tenera levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 26" wheels · Rims: Weinmann CN-520, 36-hole · Hubs: Aluminum, Q/R · Front tire: 26 x 1.95" Kenda Komfort
Controls and contact points
Archived: Headset: 1 1/8" threadless steel · Handlebar: Steel, 1" rise · Stem: Aluminum, adjustable · Seatpost: Aluminum suspension, 27.2mm diameter · Saddle: Jamis Comfort · Pedals: Resin platform
Have you owned this model?Help document firsthand fit, ride and maintenance details that may no longer be available.
This archive record has limited published detail. Share what would help another rider understand how this model fit, rode and held up over time. Velopedia reviews every contribution before publication.
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.
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.