Ridley Helium SLA 50 - Unisex
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A benchmark in cost-effective performance, the legendary Helium gets the latest tech in aluminum frame construction. Retaining the stiffness-to-weight ratio that distinguished the original, the SLA uses exceptionally thin-walled tubing sections with double-pass welding on the head and seat tubes for a frame that's both tough and light. Worried about the bone-shattering stiffness that used to characterize aluminum? Don't be. Thin, strong seat stays, a svelte seatpost and the beautiful carbon fibre fork keep it comfortable and responsive, like carbon bikes twice its price. A sweet sprinkling of Shimano and 4ZA components makes this ride a special one. Shimano 105 shift swag creates a classy build, while rock-solid Mavic wheels provide exceptional everyday performance.
- Frame uses 6000-series aluminum with double-pass welding to produce a light, stiff and durable frame.
- 1200g frame weight is on par with carbon fibre bikes.
- Tapered, reinforced head tube shaves grams, aids aggressive handling and provides excellent impact protection.
- Ultra-thin chainstays provide shock absorption for a comfortable, buzz-free ride.
- Full carbon fibre fork with carbon steerer keeps the weight low.
- Internal routing aids aerodynamics while keeping cables silky smooth.
- Mavic Aksium Elite wheelset with 25mm Mavic Yksion Guard tires.
- Shimano 105 11-speed groupset.
- Compact Shimano RS510 crankset is at home climbing or sprinting.
- 4ZA brakes provide solid performance.
- 4ZA Stratos handlebars, seatpost, stem, and other components are durable performers.
- Bikes are covered by MEC's Rocksolid Guarantee and Bike Service Agreement. You can bring your bike to any MEC bike shop for free adjustments and minor maintenance for a year after purchase.
- Ridley was born in Flanders, Belgium, a region infamous for harsh cycling conditions. Against this backdrop Ridley engineer, test, and refine their frame construction, race technology, tube profiles, and their own branded component line, 4ZA.
|Ideal for||Sport road cycling|
|Frame||Ridley Helium aluminum|
|Fork||Helium HM carbon|
|Stem||4ZA Stratos 31.8mm|
|Headset||FSA NO. 44E|
|Handlebars||4ZA Stratos 31.8mm|
Mechanical disc brakes are more powerful than rim brakes, but less powerful than hydraulic brakes.
|4ZA (caliper rim)|
|Brake levers||Shimano 105|
|Derailleur (front)||Shimano 105|
|Derailleur (rear)||Shimano 105|
|Crank + rings||Shimano FC RS510 50-34T|
|Bottom bracket||Shimano 105 BSA|
Cassettes with a smaller range allow you to go faster; a bigger range makes climbing hills easier.
|Shimano 105 11-speed 11-28T|
|Tires||Mavic Yksion Elite Guard 700 x 25|
|Wheel||Mavic Aksium Elite|
How to measure
- Standover (J)
- Distance from the ground surface to the top of the top tube. Measured at the mid-point of the top tube, or where the rider would be standing when straddling the bike. This measurement should be 2-3cm shorter than your inseam.