Bicycle Comas 20 inches for Trial and Biketrial. Model R1 970 20 with disc brakes. Threated bottom bracket 123mm. Tapered 1,5" headset. High quality Comas components. Postmount Hope Tech 3 brake system. Obr Gekok tires. Matt black finished with Comas logos in white and red. 7.720 grams of weight.

MAIN FEATURES

· Weight: 7,860 kg (Shimano brakes).

Frame and fork

· Frame Comas 1008R1 Tapered. Aluminium 6082-T6. For Postmount disc brake systems.
· Variable section pipes. Lower pipe triangular shaped. Upper pipe curved to evite hits in bottom bracket area.
· Yoke reinforcement in bottom bracket area.
· Rectangular shaped and oversized chainstay tubes.
· Transversal reinforcement bridge in upper rear pipes.
· CNC machining dropouts.
· Fork Comas. Aluminium 6082-T6. For Postmount disc brake systems.
· Tapered headset, CNC machining, for semi integrated tapered headsets (1-1/8" - 1,5").
· Oversized fork arms and optimized to get the best resistance. CNC machining dropouts.
· 68mm wide bottom bracket case. For thread 1,37" x 24T bottom brackets.
· Rear wheel dropouts 116mm distanced and CNC machining.
· Black anodised with Comas details in red and white.

Geometry of the bike

· Total long: 970 mm
· Chainstay: 350mm
· BB height: +85mm
· Headset tube: 120mm
· Headset angle: 72º
· Reach: 620mm

Wheels features

· Front hub Comas conical 100mm wide for 28 holes rims.
· Rear hub Comas for disc brake. 116mm wide for 32 holes rims.
· Front rim simple wall Comas 20 inches. 33mm wide. For 28 holes hubs.
· Rear rim simple wall Comas 19 inches. 48mm wide. For 32 holes hubs.
· Inoxidable spokes 1,8mm of diámeter.
· Aluminium black anodised 16G nipples.
· Front tire OBR Gekok 20" x 2.00.
· Rear tire OBR Gekok 19" x 2.60.
· Comas light tubes.

Drive and brakes features

· Semi integrated headset Tapered type 1-1/8" (upper side) y 1,5" (lower side). Sealed bearings.
· Stem Comas 130mm/20º for 31.8mm handlebars. Four bolts handlebar clamps.
· Handlebar Comas aluminium 115mm height. 720mm wide. For 31.8mm stems.
· Comas 4mm foam grips with Comas logos in white.
· Hope Tech 3 front brake.
· Hope Tech 3 rear brake.
· Front disc rotor Comas Race 160mm.
· Rear disc rotor Comas Race 160mm.

Transmission features

· Threated bottom bracket ISIS type cartridge. 123mm axle.
· Cranks Comas aluminium ISIS type 160mm long.
· Freewheel Comas 9 pawls and 108 points. 1,37"x24T thread. 18 teeth (18T).
· Comas Ring type aluminium freewheel bashguard red anodised.
· Comas aluminium centered sprocket 13 teeth (13T). Red anodised.
· Chain YBN-20D.
· Aluminium simple cage Comas pedals low profile.