Engineered for both enthusiasts and newcomers to the road discipline, the Geometric AR Series Sensah offers a smooth, lightweight ride with dependable 2×12 gearing. It combines an alloy frame and carbon fork to balance strength, comfort and responsiveness on Malaysia’s paved roads.
Specifications & Dimensions
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Frame: 700C aluminium alloy road frame with smooth welding and padded finish
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Fork: 700C rigid carbon fork
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Sizes / Options: Available in frame sizes 45 cm, 47 cm, 49 cm, 51 cm
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Handlebar: Alloy road type, diameter 31.8 mm, width options 400 mm or 420 mm
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Stem: Alloy A-head, length 90–100 mm, rise “-7°” geometry
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Headset / Bearings: Sealed bearing headset, threadless construction
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Rims / Wheels: Alloy double-wall rims, 24H, rim height 40 mm, internal width ~20.5 mm
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Hubs: Alloy sealed-bearing hubs front and rear, with quick-release skewers
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Tyres / Tubes: CST 700 × 25C (skin side) with valve (F/V)
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Drivetrain / Gearing:
• Shifter / Brake Lever: Sensah Empire-Pro ST-00-6900, 12-speed
• Front Derailleur: Sensah Empire-Pro FD-00-3800 R12 J2
• Rear Derailleur: Sensah Empire-Pro RD-00-8500 R12 GS with carbon cage
• Crankset / Chainrings: Prowheel 34T & 50T, crank length 170 mm, alloy arms with steel ring
• Cassette / Freewheel: Sugek 12-speed, often 11–32T or 11–34T range (depending on spec)
• Chain: KMC 12-speed chain -
Brakes / Calipers: Tektro alloy caliper brakes for road use; brake levers integrated with shifters (Sensah)
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Seatpost & Saddle: Alloy seatpost 31.6 mm × 300 mm, with clamp; sporty saddle included
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Pedals: Alloy cage-style pedals with plastic body, ball-bearing design
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Approximate Weight: ~10.5 kg (ready to ride)
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Other notes: Comes ~85 % assembled in carton packaging
Key Features & Advantages
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The aluminium frame with clean welding ensures durability without excessive weight.
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Carbon rigid fork enhances front-end responsiveness and damping of road buzz.
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The 2×12 drivetrain yields a broad gear range, offering strong climbing capability and fast flats.
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Sealed bearing hubs and headset reduce friction and maintenance needs.
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Road caliper brakes are lightweight and serviceable across many towns in Malaysia.
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With a nominal weight of ~10.5 kg, it is light enough for spirited climbing yet stable in handling.
Usage Instructions
Initial Setup
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Upon delivery, ensure the front wheel, handlebars, seatpost and pedals are correctly installed and torqued to spec.
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Adjust saddle height such that your leg has a slight bend at the bottom of the pedal stroke (not fully locked).
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Align the handlebars with the front wheel and secure stem bolts firmly.
Gearing & Riding
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Start in a middle gear; shift to lower gears (larger cogs) for climbs, higher gears for flats.
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To shift more smoothly, slightly reduce pedalling force during changes.
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Avoid extreme cross-chaining (e.g. small ring + small cog) to protect the drivetrain.
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Use both front and rear caliper brakes evenly when slowing, especially on descents or in wet conditions.
Routine Maintenance
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Clean and lubricate the chain regularly (especially after rain or dusty rides).
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Monitor tyre pressures; typical 700 × 25C road tyres may be recommended around 90–120 psi (or as stamped on sidewall).
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Check brake pads for wear and alignment; adjust or replace as needed.
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Inspect frame joints, bolts, headset and rims periodically.
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Replace worn parts (chain, cassette, cables) before they cause damage.
Precautions & Safety Notes
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Always wear a helmet, gloves, and visible clothing — especially during traffic or low-light periods.
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Before each ride, ensure all quick-release levers, clamps and bolts are securely tightened.
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Do not exceed the recommended weight limit for frame, seatpost and components (rider + gear).
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Avoid riding aggressively over large potholes, curbs or obstacles—these can damage rims, frame, fork or components.
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If you hear unusual creaks, detect looseness in steering, or encounter shifting/braking problems, stop riding immediately and inspect or consult a reputable bike mechanic.
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Store the bike indoors or sheltered from direct sun and humidity to preserve paint, bearings and components over time.
