Velopedia Bicycle Archive
2022 Polygon Siskiu T8
Mountain bicycle from the Velopedia specification archive.
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What Velopedia knows
- Model year
- 2022
- Category
- Mountain
- Original MSRP
- $2,199.00
- Sizes
- 27.5” SMALL, 27.5” MEDIUM, 29” MEDIUM, 29” LARGE, 29” XTRA LARGE
- Colors
- Charcoal Black, Purple Black
- Geometry
- 5 manufacturer sizes · Geometry context
- Record coverage
- 21 preserved details · 2 archived images · original MSRP · preserved geometry
- Archive ID
- 900001779
Frameset
| Frame Construction | ALX Trail Frame 140mm Travel (27.5”) / 135mm Travel (29”), Taper H/T |
|---|---|
| Frame Material | Aluminum |
| Fork | FOX 34 Rhythm 150mm (27.5") / 140mm (29") Travel |
| Rear Shock | FOX Float DPS Special Tuning E2E:210x55mm, Hardware:8MMX25mm |
Drivetrain
| Shifters | Shimano SLX SL-M7100-R, 1X12-Speed Trigger |
|---|---|
| Rear Derailleur | Shimano SLX RD-M7100-SGS Direct Attach |
| Crankset | Shimano MT-510-1 Boost 32T |
| Bottom Bracket | Shimano 2-Piece Crankset BSA Threaded |
| Cassette | 12 Speed 11-51T |
| Chain | KMC X12 12SPEED |
| Pedals | Alloy Flat Pedal W / Replaceable PIN & Reflector |
Brakes
| Brakes | Tektro HD-M745 4-Pistons Hydraulic Disc Brakes; Levers: Tektro Lever; Rotors: Shimano SM-RT54 180mm Center-Lock |
|---|
Cockpit & Contact Points
| Headset | Zero Stack (ZS) Sealed Bearing for Taper Head Tube, ZS 44/28.6 | ZS 56/40 |
|---|---|
| Handlebar | Entity Xpert, Alloy W:780mm R:20mm BB:35mm |
| Stem | Entity Xpert Alloy, EXT: 35mm, BB: 35mm, R/D: 7 Degree |
| Saddle | Entity Xtent |
| Seatpost | Dropper Post Tranz-X 150mm (S-M) 170 (L-XL) Travel, Zero Offset, 30.9mm |
Wheels & Tires
| Wheels | Entity XL2 Disc 584-35 (27.5”) / 622-35 (29”) |
|---|---|
| Rims | 584 / 622-35 32H for Tyre 584 / 622-54/76 Tubeless Ready |
| Front Tire | Performance Tire, 27.5"X2.60"/29”X2.60" |
| Rear Tire | Performance Tire, 27.5"X2.60"/29”X2.60" |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | S (27.5″) | M (27.5″) | M (29″) | L (29″) | XL (29″) |
|---|---|---|---|---|---|
| Seat tube | 385 mm | 400 mm | 400 mm | 415 mm | 430 mm |
| Effective top tube | 582.5 mm | 605.7 mm | 605.9 mm | 629.1 mm | 652.4 mm |
| Head tube | 105 mm | 120 mm | 90 mm | 105 mm | 120 mm |
| Head-tube angle | 65° | 65° | 65.5° | 65.5° | 65.5° |
| Seat-tube angle | 76.5° | 76.5° | 76.5° | 76.5° | 76.5° |
| Actual seat-tube angle | 71° | 71° | 70.5° | 70.5° | 70.5° |
| Chainstay / rear center | 425 mm | 425 mm | 430 mm | 430 mm | 430 mm |
| Wheelbase | 1172.8 mm | 1199.1 mm | 1193.5 mm | 1219.7 mm | 1245.9 mm |
| Bottom-bracket drop | 20 mm | 20 mm | 39 mm | 39 mm | 39 mm |
| Bottom-bracket height | 335 mm | 335 mm | 335 mm | 335 mm | 335 mm |
| Reach | 440 mm | 460 mm | 460 mm | 480 mm | 500 mm |
| Stack | 593.5 mm | 607.1 mm | 607.6 mm | 621.2 mm | 634.9 mm |
| Standover height | 666.6 mm | 672.5 mm | 676.6 mm | 686.2 mm | 695.9 mm |
Geometry source: Polygon first-party metric geometry table ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
S (27.5″) geometry
Archive context: Its reach of 440 mm sits toward the longer end. Its bottom-bracket drop of 20 mm sits toward the shallower-drop end. Its stack of 593.5 mm sits toward the lower end.
Compared with 64 distinct mountain geometries in the Small-equivalent size cohort from model years 2021–2024 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze S (27.5″) geometry M (27.5″) geometry
Archive context: The chainstay of 425 mm sits toward the shorter rear-center end. Its bottom-bracket drop of 20 mm sits toward the shallower-drop end. Its stack of 607.1 mm sits toward the lower end.
Compared with 68 distinct mountain geometries in the Medium-equivalent size cohort from model years 2021–2024 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze M (27.5″) geometry M (29″) geometry
Archive context: Its stack of 607.6 mm sits toward the lower end. Its reach of 460 mm sits somewhat longer than typical. The chainstay of 430 mm sits somewhat shorter than typical.
Compared with 68 distinct mountain geometries in the Medium-equivalent size cohort from model years 2021–2024 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze M (29″) geometry L (29″) geometry
Archive context: The chainstay of 430 mm sits toward the shorter rear-center end. Its reach of 480 mm sits somewhat longer than typical. Its stack of 621.2 mm sits somewhat lower than typical.
Compared with 59 distinct mountain geometries in the Large-equivalent size cohort from model years 2021–2024 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze L (29″) geometry XL (29″) geometry
Archive context: The chainstay of 430 mm sits toward the shorter rear-center end. Its stack of 634.9 mm sits somewhat lower than typical. The seat angle of 76.5° sits somewhat steeper than typical.
Compared with 56 distinct mountain geometries in the XL-equivalent size cohort from model years 2021–2024 in the Velopedia archive.Want to go deeper?Open this exact published size and configuration in the Velopedia Geometry Analyzer, then complete any measurements the manufacturer did not provide.
Analyze XL (29″) geometry Parts & serviceability
Find replacement parts
ChainKMC X12 12SPEEDExact archived model
Brake padsTektro HD-M745 4-Pistons Hydraulic Disc BrakesBrake model identified — verify pad shape
Bottom bracketShimano 2-Piece Crankset BSA ThreadedNamed archived component — verify dimensions
More qualified parts (4)
CranksetShimano MT-510-1 Boost 32TNamed archived component — verify exact version
Rear derailleurShimano SLX RD-M7100-SGS Direct AttachExact archived model
ShiftersShimano SLX SL-M7100-R, 1X12-Speed TriggerExact archived model
Seatpost30.9 mm dropper postDropper post identified — select the published travel for your frame size
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. 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. Commercial relationships do not influence Archive specifications or analysis.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
- BrakesBoth levers should feel firm and return cleanly. Check for fluid around the levers and calipers, inspect pad thickness and contamination, and look for worn or bent rotors.Inspect the brakes →
- SuspensionAsk when the fork and shock were last serviced. Check the stanchions for damage, look for oil at the seals, cycle both units through their travel and test the suspension pivots for play.Evaluate the suspension →
- DrivetrainShift through every gear under light load and measure chain wear. Confirm that the shifter, derailleur, chain and cassette belong to the same 12-speed system.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads. If it is set up tubeless, confirm both tires hold pressure and ask when the sealant was last refreshed.Check wheels and tires →
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: 2022 Polygon Siskiu T8 · Mountain · Published sizes: 27.5” SMALL, 27.5” MEDIUM, 29” MEDIUM, 29” LARGE, 29” XTRA LARGE
Frame and fork
Inspect the frame and fork →Archived: Frame: ALX TRAIL FRAME 140MM TRAVEL (27.5”) / 135MM TRAVEL (29”), TAPER H/T · Fork: FOX 34 RHYTHM 150mm (27.5") / 140mm (29") TRAVEL
Suspension
Evaluate the suspension →Archived: Fork: FOX 34 RHYTHM 150mm (27.5") / 140mm (29") TRAVEL · Rear shock: FOX FLOAT DPS SPECIAL TUNING E2E:210X55MM, HARDWARE:8MMX25MM
Drivetrain
Check drivetrain wear →Archived: Shifters: SHIMANO SLX SL-M7100-R, 1x12-SPEED TRIGGER · Rear derailleur: SHIMANO SLX RD-M7100-SGS DIRECT ATTACH · Crankset: SHIMANO MT-510-1 BOOST 32T · Bottom bracket: SHIMANO 2-PIECE CRANKSET BSA THREADED · Cassette: 12 SPEED 11-51T · Chain: KMC X12 12SPEED
Brakes
Inspect the brakes →Archived: Brakes: TEKTRO HD-M745 4-PISTONS HYDRAULIC DISC BRAKES; Levers: TEKTRO LEVER; Rotors: SHIMANO SM-RT54 180mm CENTER-LOCK
Wheels and tires
Check wheels and tires →Archived: Wheels: ENTITY XL2 DISC 584-35 (27.5”) / 622-35 (29”) · Rims: 584 / 622-35 32H FOR TYRE 584 / 622-54/76 TUBELESS READY · Front tire: PERFORMANCE TIRE, 27.5"X2.60"/29”X2.60" · Rear tire: PERFORMANCE TIRE, 27.5"X2.60"/29”X2.60"
Controls and contact points
Archived: Headset: ZERO STACK (ZS) SEALED BEARING FOR TAPER HEAD TUBE, ZS 44/28.6 | ZS 56/40 · Handlebar: ENTITY XPERT, ALLOY W:780MM R:20MM BB:35MM · Stem: ENTITY XPERT ALLOY, EXT: 35mm, BB: 35mm, R/D: 7 Degree · Seatpost: DROPPER POST TRANZ-X 150MM (S-M) 170 (L-XL) TRAVEL, ZERO OFFSET, 30.9MM · Saddle: ENTITY XTENT · Pedals: ALLOY FLAT PEDAL W / REPLACEABLE PIN & REFLECTOR
Before and during the test ride
Follow the full used-bike inspection order →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Market Snapshot
Velopedia did not find a close used eBay listing in the latest snapshot. New and used listings remain separate.
Evidence standard
Fixed-price and Best Offer item prices only
Shipping and tax excluded
Active asks, not completed sales
No close current matches found. Velopedia did not find an eBay listing confident enough to include in the latest snapshot.
Listings shown have not passed their eBay-supplied end time. Velopedia rechecks matched bicycles on a protected weekly cycle; availability can still change between checks. Price calculations use active fixed-price and Best Offer item prices before shipping and tax. Auction bids, auction-only prices, classified ads, lower-confidence Review candidates and ended listings are excluded. These observations are not completed-sale prices, a certified appraisal or a guarantee of value.
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.