Diamant Turmalin Deluxe+ (Einstieg: tief)
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The Turmalin Deluxe+ (low step-through) from Diamant, launched in 2022, is a versatile e-bike which, at a price of 2,969 euros, offers a wide range of high-quality components and technical features. The frame is made from Alpha Smooth aluminium with internal cable routing and is compatible with belt drives. The post-mount disc brake mounts ensure reliable braking performance. Weighing 26 kg and with a maximum load capacity of 136 kg, the bike is robust and suitable for everyday use.
The model is fitted with hydraulic disc brakes – either Shimano MT200 or C-Star Power, depending on availability – with 180 mm or 160 mm Shimano RT10 Centre Lock discs. The Shimano Nexus Revo gear lever offers 8-speed shifting, whilst the SR Suntour NEX fork, with 50 mm of travel and adjustable spring preload, ensures comfort on uneven roads.
Lighting is provided by the Herrmans MR GO E LED front light and the Spanninga Solo LED rear light. The non-slip pedals with reflectors contribute to safety. Power is transmitted via a Shimano HG40 sprocket, whilst the crankset is made of aluminium by ProWheel with a crank arm length of 175 mm.
The aluminium handlebars are 630 mm wide and, with their ergonomic Herrmans Clik grips and an adjustable stem, offer comfort and adaptability. The wheelset consists of Bontrager Connection hollow-wall rims with an internal width of 20 mm or Alex Rims DP23 aluminium rims, each fitted with a Presta valve.
The Selle Royal Nuvola saddle and the suspension seatpost provide additional comfort. Plastic mudguards from SKS and a Pletscher Comp 18 kickstand complete the specification. The aluminium luggage rack is fitted with a spring-loaded flap and the MIK system, making it particularly practical.
The e-bike is powered by a Bosch Active Line Plus motor with 250 watts and 50 Nm of torque, which assists speeds of up to 25 km/h. The Bosch Powerpack Performance battery offers a capacity of 500 Wh, whilst the Bosch Intuvia display with remote control ensures easy operation. The standard Bosch charger charges the battery reliably.
Overall, the Turmalin Deluxe+ offers a balanced blend of comfort, performance and functionality, making it ideal for everyday use in the city or on longer rides.
Tests & Reviews
Equipment
| Rear brakes | Shimano MT200 hydraulic disc brake or C-Star Power hydraulic disc brake, subject to availability Shimano RT10, Centre Lock disc mount, 180 mm // Shimano RT10, Centre Lock disc mount, 160 mm |
| Front brakes | Shimano MT200 hydraulic disc brake or C-Star Power hydraulic disc brake, subject to availability Shimano RT10, Centre Lock disc mount, 180 mm // Shimano RT10, Centre Lock disc mount, 160 mm |
| Frame | Alpha Smooth Aluminium, internal cable routing, compatible with drive belts, post-mount disc brake mount |
| Shift levers | Shimano Nexus Revo, 8-speed |
| Fork | SR Suntour NEX, coil spring, adjustable spring preload, 50 mm travel, 100 x 5 mm quick-release axle |
| Crankset | ProWheel, aluminium, 175 mm crank arm length |
| Sprocket | 18 Z. |
| Drive | Shimano HG40, 6/7/8-speed |
| Headset | VP, sealed threaded cartridge bearing, 1 1/8" |
| Handlebar | Aluminium, 25.4 mm clamp, 20 mm rise, 630 mm width |
| Grips | Herrmans Clik, ergonomic, with clamp // Herrmans Clik, ergonomic, with clamp |
| Stem | Aluminium, adjustable, 25.4 mm, 105 mm long |
| Saddle | Selle Royal Nuvola |
| Seatpost | Aluminium, sprung, 31.6 mm, 300 mm length |
| Seat clamp | Bolt-on, 36.4 mm |
| Wheelset | Bontrager Connection, hollow-section rim, 32-hole, 20 mm inner width, Presta valve // Alex Rims DP23, aluminium, 36-hole, Presta valve Shimano TX505, Centre Lock disc mount // Shimano TX505, Centre Lock disc mount Shimano Nexus, 8-speed |
| Tires | Schwalbe Energizer Active Plus with GreenGuard puncture protection, reflective strips, 50-622, ECE-R75 certified |
| Pedals | Non-slip pedals with reflectors |
| Front light | Herrmans MR GO E, LED |
| Rear light | Spanninga Solo, LED |
| Mudguards | SKS Plastics // SKS Plastics |
| Kickstand | Pletscher Comp 18 |
| Rack | Aluminium with spring-loaded flap and MIK system |
| Motor manufacturer / model | Bosch Active Line Plus, 250 watts, 50 Nm, 25 km/h |
| Display | Bosch Intuvia with remote control |
| Battery | Bosch Powerpack Performance 500 rack-mounted |
| Battery capacity (Wh) | 500 |
| Charger | Bosch standard charger, 2 A, 100–240 V |