2021 Jamis Explorer A2

Archived: 2021 Jamis Explorer A2 · Mountain · Published sizes: 15″, 17″, 19″, 21″, 14″ S/T, 16″ S/T, 18″ S/T

• Confirm the frame markings and seller description match this archived model. Note every component that differs from the published build.
• Record the frame serial number. It should be legible, unaltered and consistent with the seller’s ownership history.
• Find the size marking on the bicycle and confirm the fit before judging the condition or price.

Archived: Frame: 6061 TIG-welded aluminum, all-new sport comfort design with upright ride position, replaceable derailleur hanger · Fork: Hi-tensile steel unicrown, radius blades with dropout eyelets · Steel

• Look for dents or shape changes and inspect the edges of welds around the head tube, bottom bracket, seat cluster and suspension mounts for hairline cracks.
• Stand behind and in front of the bicycle to look for obvious frame, fork or wheel misalignment. Ask directly about crashes, transport damage and repairs.
• Inspect the fork crown, blades, dropouts and visible steerer area. Check that it is straight, securely installed and free of cracks or impact damage.

Archived: Group: Shimano TY300 rear and TY510 top swing/dual pull front · Shifters: Shimano EZ-Fire Plus, ST-EF500, 21-speed · Front derailleur: Shimano TY300 rear and TY510 top swing/dual pull front · Rear derailleur: Shimano TY300 rear and TY510 top swing/dual pull front · Crankset: Forged alloy, 48/38/28T, 170mm with chainguard · Bottom bracket: Sealed cartridge, 68 x 110.5mm · Cassette: Shimano freewheel 7-speed, 14-34 · Chain: KMC Z7

• Shift through every available gear under light load. Hesitation, skipping or inconsistent indexing can reflect wear, damage, poor adjustment or mismatched replacement parts.
• Measure chain wear with a compatible gauge and inspect chainring, cassette or freewheel teeth. A new chain does not rule out wear in the remaining drivetrain.
• Turn the cranks slowly, feel for rough bearings and check for side-to-side play. Inspect crank arms, chainring bolts and pedal threads for looseness or damage.

Archived: Brakes: ProMax alloy direct pull brakes with Shimano levers

• Inspect pads and braking surfaces, check the complete cable or hose path, and confirm both controls feel consistent and return cleanly.
• Before riding, test every installed brake separately at walking speed. Each should stop firmly and release cleanly without its control reaching the end of its usable travel.

Archived: Wheel size: 27.5 · Wheels: Alloy 36H rims, Formula alloy hubs, QR front and rear, 14g stainless steel spokes · Front tire: CST – 1918, 27.5 x 2.1 · Rear tire: CST – 1918, 27.5 x 2.1

• Spin both wheels and watch for side-to-side and vertical movement. Check spoke tension, rim condition and hub play.
• Inspect both tire casings for cuts, cracking, plugs, bulges or exposed threads and confirm the installed sizes are safe for the rims and available frame and fork clearance.
• Remove and reinstall or closely inspect both wheel-retention systems. Axles or quick releases should tighten correctly with undamaged threads, hardware and dropouts.

Archived: Headset: Internal cup, threaded, 1 1/8” · Handlebar: Comfort hi-rise, steel, 25.4 x 80mm rise x 15 ̊ sweep x 640mm · Stem: Jamis alloy, angle-adjustable, 90mm ext x 150mm quill (14 ̊18”) or 110mm ext x 180mm quill (19 ̊21”) · Seatpost: Alloy micro-adjust, 350mm x 27.2mm, with alloy QR clamp · Saddle: Jamis Comfort with extra thick padding, synthetic suede top, burnished side panels and bumper springs · Pedals: Comfort platform with TPE non-slip insert

• Apply the front brake and rock the bike to check for headset play or notchiness. Inspect the stem, handlebar and clamp zones, then confirm every fastener and control is secure.
• Check that the seatpost moves for adjustment and that the saddle, post and clamp hold securely without cracks, severe corrosion or damaged hardware.

• Before riding, confirm both wheels are secure, tires are safe, both brakes function, and the headset, handlebar, stem, cranks and pedals have no looseness.
• Begin at low speed. Test steering, braking and shifting progressively, then load the drivetrain and suspension only after the basic safety checks pass.
• Listen and feel for repeated knocks, grinding, skipping, brake pulsation or movement at joints. Stop the test if the bicycle cannot be controlled safely.