LEWIS LHT Axial Cylinder 4x17mm Titanium Piston Hydraulic Disc Brake for Downhill & Enduro
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Downhill, Enduro, All-Mountain
High-precision CNC machining technology
Triple Adjustments Technology for Leverage Ratio & Lever Reach & Bite Point.
4x17mm Titanium+Ceramic pistons with TP-40 sintered Brake pads.
Mineral Oil
Ultra light lever action, Powerful but predictable braking force.
Bearing pivots provide superior modulation and feel.
Front+Rear Brakes weight = 639g(Oil Hose included), 422g without Oil Hose.
Approx. 68g for titanium parts, reduction weight of approx. 39g, compared to stainless steel components
Titanium in a brake only pays off if you know why it is there. On the LEWIS LHT it does two jobs, in the 4 x 17mm titanium and ceramic pistons and in the titanium screws and bolts around the axial cylinder and caliper.
What titanium and ceramic do together
Under hard use, the titanium conducts heat well while the ceramic insulates, so pad heat moves and spreads more evenly. Titanium hardware also trims weight compared with stainless steel components, which matters most to riders who count grams on a downhill or enduro build.
Three lever settings and the order to use them
Start with reach, which adjusts without tools, then set bite point with a 2mm Allen key. Leverage ratio comes last, because moving the center point of the lever changes how the rest of the stroke feels, and it is easier to judge once reach and bite point are settled.
Removing the hose without a mess
The detachable olive head in the anti-leak oil system makes hose removal simpler when routing the brake through a frame. Plan on a bleed with mineral oil afterwards, using the LEWIS Bleed Kit that is recommended for this model.
- Axial cylinder with a split clamp, in CNC 7075 T6 aluminum
- Post mount caliper with TP-40 sintered metallic pads
- Rotors of 180, 200, 203, 220 or 223mm, optional and separate
- LEWIS 2.3mm rotors, or 2.0mm to 2.5mm from another brand
- Black braided hose, 5mm outside with a 2.2mm bore
- Hose lengths of 90cm front and 165cm rear
- 1 finger lever, with Standard or Nebula options
Intended uses include enduro, downhill, all-mountain, e-bike and dirtbike riding. Add an adapter that suits your mount and chosen rotor before the bike goes back together.
Technology
Bite Point & Lever Reach Adjustment

LEWIS's technology for dual adjustment of lever reach & bite point allows you to customize the feel to your preference for superior performance out on the trails.
Reach(tool free), bite point(with allen key).
Leverage Ratio Adjustment

The Free Lever Adjustment technology allows the lever ratio to beadjusted by moving the center point of the brake lever.
4x17mm Pistons

Upgraded 4x17mm pistons, with titanium bolts, high strength and light weight.
Titanium Pistons with Ceramic Insulation

In high-intensity use environments, the good high-temperature thermal conductivity of the titanium material complements the ceramic thermal insulation, allowing the pads to conduct and dissipate heat more evenly.
Anti-Leak Oil System

Detachable Olive Head used in Anti-leak System makes it easier for the rider to disassemble the brake hose.
Specifications
| Axial MASTER CYLINDER | |
| Material | CNC 7075T6 Aluminum |
| Color | Black, Silver, Nebula, customized colors |
| Clamp Type | Split |
| Screws | Titanium |
| ADJUSTABLE LEVER REACH | YES, Tool Free |
| ADJUSTABLE PAD BITE POINT | Yes, with 2mm Allen key |
| LEVER BLADE | |
| Material | CNC 7075 T6 Aluminum |
| Color | Black, Silver, customized colors |
| Brake lever version | 1 Finger |
| CALIPER | |
| Material | CNC 7075 T6 Aluminum |
| Color | Black, Silver, Black & Silver, customized colors |
| MOUNT TYPE | Post mount |
| Piston | 4 x 17mm Titanium + Ceramic Pistions |
| Screws | Titanium |
| Pad type | Metallic |
| Hose | |
| Hose size | Outside Diameter 5mm,Bore 2.2mm |
| Hose length | 90cm front /165 cm rear |
| Hose finish | Black, Braided |
| INTENDED USE | Enduro, Downhill, All-Mountain, E-bike, Dirtbike |
| Rotors | Not included, optional (180 mm|200mm | 203 mm|220mm | 223 mm) Recommending LEWIS 2.3mm rotors or other brands of 2.0mm -2.5mm thick rotors |
| Adapter | Not included |
| WEIGHT | Master Cylinder 94g, Caliper 117g |
| Oil | Mineral oil |
| Bleed Kit Recommendation | LEWIS Bleed Kit |