Lewmar 140TT 2.0 kW Tunnel Thruster
#3 in Under 45 kgfFull review
The older Lewmar 140TT. Buy it only to replace an existing unit; the Gen 2 2.2 kW version gives 5 kgf more for about $225 more.
Amazon $1,613.74$1,613.74
The Lewmar 140TT 2.0 kW Tunnel Thruster is the better bow thruster overall, rated 3.5 to 3.4. The Lewmar 110TT Tunnel Thruster Kit costs $270.86 less ($1,342.88 vs $1,613.74).
Prices were last checked November 4, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Lewmar 110TT Tunnel Thruster Kit
#5 in Under 45 kgfFull review
A kit for a small boat up to about 28 ft that wants everything in one box. Sleipner SE30 gives more thrust for about the same money.
Amazon $1,342.88$1,342.88
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every under 45 kgf bow thruster; a clear win is highlighted. How we rank explains each one.
| Factor weight | Lewmar 140TT 2.0 kW Tunnel Thruster | Lewmar 110TT Tunnel Thruster Kit |
|---|---|---|
| Overall rating | 3.5/5 | 3.4/5 |
| Value 40% | 62 $43.61 per kgf ($1,613.74, 37 kgf) | 56 $47.96 per kgf ($1,342.88, 28 kgf) |
| Efficiency 25% | 64 18.5 kgf per kW (37 kgf, 2 kW) | 67 18.7 kgf per kW (28 kgf, 1.5 kW) |
| Run time 25% | 50 run time not published (neutral score used) | 50 run time not published (neutral score used) |
| Weight 10% | 28 2.8 kgf per kg (37 kgf, 13 kg) | 27 2.8 kgf per kg (28 kgf, 10 kg) |
Specifications
| Lewmar 140TT 2.0 kW Tunnel Thruster | Lewmar 110TT Tunnel Thruster Kit | |
|---|---|---|
| Thrust | ||
| Rated thrust | 37 kgf | 28 kgf |
| Style | Tunnel | Tunnel |
| Propellers | Single | Single |
| Boat length | - | Up to 28 ft |
| Electrical | ||
| Supply | 12 V | 12 V |
| Motor | 2 kW | 1.5 kW |
| Build | ||
| Tunnel diameter | 140 mm | 110 mm |
| Weight | 13 kg (29 lb) | 10 kg (22 lb) |