| Selected Bikes |  Author Ultrasonic 27.5 2021-22
Brand: Model: |
 Kreidler Raise RT4
Brand: Model: |
Brand: Model: |
Brand: Model: |
| Speed | 11 | -- | ||
| Frame | Triple butted hydroformed alloy 6061 27.5" | Aluminum 6061, 28 "trekking | ||
| Stem | AUTHOR alloy | Promax MQ-565, aluminum, angle adjustable, 4-way clamping | ||
| Handle Bar | AUTHOR Flat Top bar 9° 620 / 640 mm | Trekking, steel, 600 mm | ||
| Fork | Front : RST F1RST 27.5 air, lock out (80 mm) | Suntour CR-7V | ||
| Seatpost | AUTHOR alloy (31.6) | Promax, spring loaded, aluminum, 27.2 mm, 300 mm | ||
| Grip | AUTHOR kratton rubber | -- | ||
| Crankset | -- | Shimano TY-301, 170 mm, 48/38/28 teeth | ||
| Pedals | Alloy | Marwi, plastic | ||
| Chain | KMC X11 | KMC X8 | ||
| Shifters | SHIMANO SLX (11) | -- | ||
| Saddle | AUTHOR Champion Author Navigator | Selle Royal Rio | ||
| Derailleur Front | -- | Shimano FD-TY71 | ||
| Derailleur Rear | SHIMANO SLX | Shimano Acera RD-M360, 8-speed | ||
| Hub Front | AUTHOR Xenon 32 holes | Shimano DH-C3000, hub dynamo | ||
| Hub Rear | -- | Shimano FH-TX500 | ||
| Spoke | Black stainless steel 2.0 mm | Stainless steel 2.0 mm | ||
| Bottom Bracket | PROWHEL BB unit | Tuna topaz | ||
| Stand | -- | Ursus side stand | ||
| Headlamp | -- | AXA Echo 15 LED, 15 LUX with parking light | ||
| Taillamp | -- | AXA Slim LED, with parking light |
| Front | CST B-Trail aramid 27.5" × 2.25" | Kenda Trekking, 42-622, reflex | ||
| Rear | CST B-Trail aramid 27.5" × 2.25" | Kenda Trekking, 42-622, reflex | ||
| Wheel / RIM | Rims :AUTHOR Xenon TRC 27.5 32 holes | Schurmann YAK19 aluminum hollow chamber |
| Front | TEKTRO Gemini disc hydraulic (6" rotors) | Promax V-Brake rim brake | ||
| Rear | TEKTRO Gemini disc hydraulic (6" rotors) | Promax V-Brake rim brake | ||
| Brake Lever | TEKTRO Gemini WS | Shimano Altus ST-EF500 |
| Front | -- | -- | ||
| Rear | -- | -- |
| Colors | -- | Black Matt |
| Length | -- | -- | ||
| Weight | 12 kg | 17.3 kg |
| Features | -- | -- | ||
| Additional Details | SIZE :14", 16" HEAD PARTS: AUTHOR Integrated 1.5" tapered CHAIN WHEEL : PROWHEEL 32 teeth 165 / 170 mm cranks |
Tax Rate : Chin Haur, 1 1/8 ”semi-integrated Porter : Strutless, with spring clamp Chain guard : Chain case, plastic Fenders : SKS, plastic Handles : Herrmans Ergo 84B Gear lever : Shimano Altus Ring gear : Shimano CS-HG200, 12-32 teeth Gear ratio (front : rear) : 48/38/28 teeth: 12-32 teeth |
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