Designed to accommodate tires with up to 45c clearance ensuring versatility and capability to cross various terrains.
Equipped with a mullet groupset, this bike delivers a perfect balance of power and aero, ready to take you places you never thought possible.
BOSCH Performance Line Sprint provides a silent strength and a powerful assist of up to 45km/h.
Ride Beyond, Reimagined.
Unveil The Ultimate Gravel Experience.
Our new evolution in gravel bike! Inspired by the Tambora gravel to all-road series, the new Polygon Tambora gravel e-bike will unlock more power at any terrain, any speed with the BOSCH e-bike system. Spend less time breaking any wind, any obstacle, or any climbs at double speed – effortlessly. Featuring an ACX carbon gravel frame and fork for optimal performance.A perfect companion for a tough-competitive ride, or leisure fun gravel ride.
Engineered for Versatile Adventures
The Tambora AE combines a carbon frame with a stiff chainstay design for enhanced power transfer, complemented by dropped seatstays to elevate comfort and compliance. Whether you're venturing off the beaten path or enhancing your daily commute, it's your ticket to boundless exploration.
Ample Tire Clearance
The Tambora AE is designed to accommodate tires with up to 45c clearance, ensuring versatility and capability across various terrains. Whether it's mixed surfaces during a race or an off-road adventure, this bike is ready to conquer it all.
Strength Meets Aerodynamics
Rest easy and tackle the steep climb and rough terrain ahead. The Tambora AE is equipped with a mullet groupset, delivering a perfect balance of power and aerodynamics. An ideal choice for riders seeking adventure, performance, and versatility in a sleek, capable e-bike, the Polygon Tambora is ready to take you places you never thought possible.
Silent Strength, Consistent Power
Powered by the BOSCH Performance Line Sprint, offering a quiet yet powerful assist of up to 45 km/h with 55 Nm of torque, providing smooth and reliable power at any speed. The wireless switch ensures a clean and easy-to-maintain setup.
Refer to manufacturer for personalised size guide.*
****NOTE: This bike is available for purchase online, but must
be picked up from an approved store.| frameset | ACX CARBON e-GRAVEL |
| fork | Carbon Rigid |
| size | S, M ,L, XL |
| frame color | METALIC BROWN |
| decal color | BROWN/SILVER |
| shifter | SHIMANO GRX BR-RX820 12-SPEED BRIFTER |
| crank | FSA CK-220-IS MEGATOOTH SH 44T |
| cassette | SHIMANO CS-M8100 XT 12-SPEED 10-51T MICROSPLINE |
| rear derailleur | SHIMANO GRX RD-RX822 12-SPEED |
| chain | SHIMANO CN-M6100 12-SPEED |
| saddle | FIZIK TERRA ARGO, STEEL ø7mm |
| seatpost | CARBON, DxL 27.2 x 400mm |
| handlebar | FSA ENERGY SUPER COMPACT, W 400mm (S-M) 420mm (L-XL), BB 31.8mm, R/D 120mm |
| handlestem | VISION NS SMR-II ST, EXT 90mm (S-M) 100mm (L-XL), BB 31.8mm, R/D 10degree |
| headset | FSA NO.55R 1.5"/CR/LS, IS 52/28.6 | IS 52/40 |
| wheel set | Novatec G24 Disc (28mm) w/ Tubeless Tape Installed |
| tire | SCHWALBE G-ONE 700C-40 622X40 ALLROUND TIRE TLE ADDIX |
| rim | CARBON FV H- 24 622x24 24H FOR TYRE 622-35/68 TLR |
| hub | F- NOVATEC D791 12x100mm 24H CL / R- CL-142 12x142mm 24H CL FOR MICROSPLINE |
| spokes | F- STAINLESS 14G NDS282 & DS284 W/ NIPPLE BRASS / R- STAINLESS 14G NDS-282 & DS-280 W/ NIPPLE BRASS |
| brake lever | SHIMANO GRX ST-RX820 |
| brake caliper | SHIMANO GRX HYDRAULIC |
| rotor | SHIMANO RT-CL800 CENTERLOCK 160MM |
| motor | BOSCH PERFORMANCE LINE SPRINT BDU3184 |
| sensor | BOSCH RIM MAGNET |
| battery | BOSCH COMPACTTUBE 400 FIXED MOUNT HORIZONTAL |
| range | Refer to Manufacturer |
| Frameset | ACX CARBON e-GRAVEL |
| Fork | Carbon Rigid |
| Size | S, M ,L, XL |
| FRAME COLOR | METALIC BROWN |
| DECAL COLOR | BROWN/SILVER |
| Shifter | SHIMANO GRX BR-RX820 12-SPEED BRIFTER |
| CRANK | FSA CK-220-IS MEGATOOTH SH 44T |
| Cassette | SHIMANO CS-M8100 XT 12-SPEED 10-51T MICROSPLINE |
| Rear Derailleur | SHIMANO GRX RD-RX822 12-SPEED |
| Chain | SHIMANO CN-M6100 12-SPEED |
| Saddle | FIZIK TERRA ARGO, STEEL ø7mm |
| Seatpost | CARBON, DxL 27.2 x 400mm |
| Handlebar | FSA ENERGY SUPER COMPACT, W 400mm (S-M) 420mm (L-XL), BB 31.8mm, R/D 120mm |
| Handlestem | VISION NS SMR-II ST, EXT 90mm (S-M) 100mm (L-XL), BB 31.8mm, R/D 10degree |
| Headset | FSA NO.55R 1.5"/CR/LS, IS 52/28.6 | IS 52/40 |
| Wheel Set | Novatec G24 Disc (28mm) w/ Tubeless Tape Installed |
| TIRE | SCHWALBE G-ONE 700C-40 622X40 ALLROUND TIRE TLE ADDIX |
| Rim | CARBON FV H- 24 622x24 24H FOR TYRE 622-35/68 TLR |
| Hub | F- NOVATEC D791 12x100mm 24H CL / R- CL-142 12x142mm 24H CL FOR MICROSPLINE |
| SPOKES | F- STAINLESS 14G NDS282 & DS284 W/ NIPPLE BRASS / R- STAINLESS 14G NDS-282 & DS-280 W/ NIPPLE BRASS |
| Brake lever | SHIMANO GRX ST-RX820 |
| BRAKE CALIPER | SHIMANO GRX HYDRAULIC |
| Rotor | SHIMANO RT-CL800 CENTERLOCK 160MM |
| Motor | BOSCH PERFORMANCE LINE SPRINT BDU3184 |
| SENSOR | BOSCH RIM MAGNET |
| Battery | BOSCH COMPACTTUBE 400 FIXED MOUNT HORIZONTAL |
| Frame Material | Carbon |
| Fork Material | Carbon |
| Brake Type | Hydraulic Disc Brake |
| Groupset Brand | Shimano |
| Groupset Model | GRX |
| Motor Brand | Bosch |
| Battery Brand | Bosch |
| Motor Type | Mid-Drive Motor |
| Shifting Type | Mechanical |
| Pedals Included | No |
| Drivetrain Gearing | 1 x 12 |
| Ride Style | Gravel |
| Broaden Your Horizons | Designed to accommodate tires with up to 45c clearance ensuring versatility and capability to cross various terrains. |
| Strength Meets Aero | Equipped with a mullet groupset, this bike delivers a perfect balance of power and aero, ready to take you places you never thought possible. |
| Consistent Power | BOSCH Performance Line Sprint provides a silent strength and a powerful assist of up to 45km/h. |
| Max Assisted Speed | 45km/h |
| Range | Refer to Manufacturer |
* All specifications listed are subject to change without notice. Please note that our specifications may be impacted by manufacturer component substitution changes caused by high global demand for bikes and resulting supply chain issues in the bike industry. We recommend confirming the specifications with your local Evo Cycles showroom if you have any questions.
Bike Weight: Many brands strive to list the lowest possible weight, but in reality weight can vary based on frame size, finish, hardware and accessories. The most accurate way to determine any bike's weight is to have your local showroom weigh it for you.
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