Boost Soil 2025

The Kross Boost Soil 2025 is the first Polish carbon eMTB to ship with a DJI Avinox drive, a milestone Kross announced at Eurobike 2025. The Boost Soil is an all-mountain carbon platform with a four-bar suspension layout, UDH hanger and a removable 800 Wh DJI Avinox FP800 battery. Headline numbers: 105 Nm of torque, 1000 W peak power from the Avinox M1 motor, a claimed 23 kg system weight, a 66.5 degree head angle and a 417 to 482 mm reach range across four sizes. £7,499 for the base trim. Community verdict: a sharp-priced way into the DJI Avinox ecosystem from a brand that has steadily built credibility in the European mid-market.

Drive system and range. The DJI Avinox M1 is the entry of the Avinox line, with 105 Nm of continuous torque (rising to 120 Nm in Boost mode) and 1000 W of peak power. It weighs just 2.52 kg, lighter than the Bosch CX Gen 5 by roughly 10 per cent, which is meaningful at the chassis-weight level. Independent lab testing has flagged that real-world peak power on the M1 sits closer to 730 to 780 W rather than the headline 1000 W, with Boost adding around 50 W on top, though Boost remains genuinely useful for short steep efforts. The 800 Wh FP800 battery is removable via side hatch, supports 4 A standard charging and gives proper all-day range, with mixed enduro use typically reaching 60 to 90 km depending on assist mode. Avinox firmware updates push through the DJI Mimo app for ongoing refinement.

Geometry and handling. A 66.5 degree head angle is slightly steeper than the modern all-mountain norm, which tilts the Boost Soil toward versatile trail riding rather than gravity-focused descending. Reach grows from 417 mm in S to 482 mm in XL, a 65 mm spread that fits a wide range of riders. The 445 mm chainstay is identical across all sizes, which favours playful handling on size M and L but means XL riders may want a longer rear centre on bigger frames. Wheelbases run 1155 to 1228 mm, on the shorter side of the modern eMTB market, contributing to a nimble feel. 29-inch wheels across the range from frame and component-spec data published at the Eurobike launch.

Build and value. One trim, £7,499. Kross has not published full component spec at the Eurobike preview stage beyond noting RockShox suspension components. The standout strength is the DJI Avinox M1 plus 800 Wh battery package at this price step, where most full-power carbon Avinox rivals (like the Amflow PR Carbon at £3,999 entry) deliver a similar drive system but with lower-tier suspension and frame builds. The questionable note is the entry-trim component spec, which is yet to be fully detailed: buyers should expect to confirm fork, drivetrain and brakes through Kross dealers before commiting.

Community-verified strengths. Owners of DJI Avinox-equipped bikes consistently praise the motor's helical gears, sealed-bearings and sub-45 dBA noise level, which all carry across to the M1 generation. Avinox's 5 riding modes (Eco, Trail, Auto, Turbo, Boost) and DJI Mimo app integration give buyers more configurability than most rivals at this price. Long-term DJI Avinox owners flag the system as feeling like a fundamentally next-generation motor compared to the established Bosch and Shimano alternatives, particularly for the weight-to-power ratio.

Caveats and known gripes. Independent lab testing has shown the Avinox M1 does not hit its headline 1000 W peak in normal Boost mode, and shuts down under sustained max-load testing. DJI service and warranty network in the UK is still bedding in, which is something buyers should factor against the more established Bosch and Shimano dealer chains. The 66.5 degree head angle limits aggressive descending compared to a Reign E+ or Mondraker Zendit. Kross brand presence in the UK is also relatively modest compared to Specialized, Cube and Canyon, which can affect dealer support and resale value.

Verdict. The Boost Soil 2025 suits the early-adopter all-mountain rider who wants into the DJI Avinox ecosystem on a Polish-designed carbon chassis, with proper 800 Wh range and a competitive entry price. Buyers chasing maximum head-angle slackness, longer-travel enduro chassis or established UK dealer reach should look at the Amflow PR Carbon, the Mondraker Zendit or the Specialized Levo Gen 4. Production status: current.