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
2.8/5
Only worth it when a tunnel can not be cut, such as a shallow or cored hull. For every other boat a tunnel thruster is far cheaper per kgf.
- 35 kgfThrust
- 1.8 kWMotor
- 12 VSupply
- None (external)Tunnel
Check price at Amazon$3,700
Price checked November 4, 2026. As an Amazon Associate we earn from qualifying purchases.
Discontinued: no longer sold new; the links below may show remaining or used stock.
Pros
- External mount: no tunnel through the hull on boats with up to 50 mm hull thickness
- Fits 19 to 32 ft boats
- 4 minute duty cycle, a minute longer than the tunnel units
Cons
- Costs $3,700 for 35 kgf, about three times the price per kgf of a tunnel unit
- Sleipner has discontinued it
- Single propeller
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its thrust. How we rank explains each one.
Specifications
| Model number | SX35/140-12V-50MM |
|---|---|
| Thrust | |
| Rated thrust | 35 kgf |
| Thrust at full supply voltage | 42 kgf |
| Style | External |
| Propellers | Single |
| Bow or stern use | Yes |
| Boat length | 19-32 ft |
| Electrical | |
| Supply | 12 V |
| Motor | 1.8 kW |
| Current draw | 245 A |
| Continuous run | 4 min |
| Build | |
| Weight | 15.3 kg (33.7 lb) |
Alternatives in this thrust
Lewmar 140TT 2.0 kW Thruster Kit
#6 in Under 45 kgfFull review
The 140TT 2.0 kW sold as a kit. Compare it against buying a Gen 2 unit and a panel separately.
Amazon $2,364.25$2,364.25
Quick BTQ 140-30 Bow Thruster
#7 in Under 45 kgfFull review
A small Italian thruster for a boat of about 7 to 9 m. At the only Amazon price found it is poor value next to a Sleipner SE30.
Amazon $4,166.15$4,166.15
Compare
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