
SRAM PC-850 Chain One Color, 8 Speed
8 Speed
Replacement option · verify fit
Velopedia Bicycle Archive
Original specifications: Shimano Acera · 8-speed · mechanical rear derailleur · 26" wheels.
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At a glance
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | A1 Premium Aluminum |
| Fork | Specialized TCR-045D, 50mm |
| Fork Material | Steel/aluminum, single crown |
| Component Group | Comfort Mix |
|---|---|
| Shifters | SRAM MRX-Plus, 8-Speed, grip shift |
| Front Derailleur | Shimano Nexave, 31.8 clamp, bottom pull |
| Rear Derailleur | Shimano Acera, long cage |
| Crankset | Sugino Impel Sport, polished arms, 48Ax38Sx28S, Super Shifter III, w/chainguard teeth |
| Bottom Bracket | TH Sport, square taper, sealed cartridge, 113mm spindle |
| BB Shell Width | 68mm English |
| Rear Cogs | 8-speed, 11 - 32 teeth |
| Chain | Shimano CN-HG53 |
| Pedals | Specialized platform nylon with kryton top |
| Brakes | Forged alloy, linear pull brakes, Alloy, 3 finger comfort levers |
|---|
| Headset | 1 1/8" Specialized threadless, loose ball |
|---|---|
| Handlebar | Specialized alloy, 80mm rise, 14 degree sweep |
| Handlebar Extensions | Not included |
| Stem | Specialized adjustable, forged alloy, high polish |
| Saddle | Specialized Super Comfort Plush, with web springs |
| Seatpost | Alloy suspension, preload adjust, 30.9mm diameter |
| Hubs | Front: Specialized forged, double sealed, QR, Rear: Shimano Paralax, forged, cassette, double sealed, QR |
|---|---|
| Rims | Alex Z-1000, 36-hole |
| Spokes | Specialized stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | Front: 26 x 1.90" Specialized New Crossroads, Flak Jacket, Rear: 26 x 1.85" Specialized New Crossroads, Flak Jacket |
| Wheel Size | 26" wheels |
Parts & serviceability

8 Speed
Replacement option · verify fit

30.9mm
Replacement option · verify fit
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.
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: 2006 Specialized Expedition Sport · Comfort/commuter · Published sizes: S, M, L, XL, womens small, womens medium
Archived: Frame: TIG-welded · Fork: Specialized TCR-045D, 50mm · Steel/aluminum, single crown
Archived: Group: Comfort Mix · Shifters: SRAM MRX-Plus, 8-Speed, grip shift · Front derailleur: Shimano Nexave, 31.8 clamp, bottom pull · Rear derailleur: Shimano Acera, long cage · Crankset: Sugino Impel Sport, polished arms, 48Ax38Sx28S, Super Shifter III, w/chainguard teeth · Bottom bracket: TH Sport, square taper, sealed cartridge, 113mm spindle · Rear cogs: 8-speed, 11 - 32 teeth · Chain: Shimano CN-HG53
Archived: Brakes: Forged alloy, linear pull brakes, Alloy, 3 finger comfort levers
Archived: Wheel size: 26" wheels · Rims: Alex Z-1000, 36-hole · Hubs: Front: Specialized forged, double sealed, QR, Rear: Shimano Paralax, forged, cassette, double sealed, QR · Front tire: Front: 26 x 1.90" Specialized New Crossroads, Flak Jacket, Rear: 26 x 1.85" Specialized New Crossroads, Flak Jacket
Archived: Headset: 1 1/8" Specialized threadless, loose ball · Handlebar: Specialized alloy, 80mm rise, 14 degree sweep · Stem: Specialized adjustable, forged alloy, high polish · Seatpost: Alloy suspension, preload adjust, 30.9mm diameter · Saddle: Specialized Super Comfort Plush, with web springs · Pedals: Specialized platform nylon with kryton top
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.