We use cookies to improve your experience on our website and to show you personalised content.
You can read our Cookie and Privacy policy or manage them individually.
You can read our Cookie and Privacy policy or manage them individually.
Description
Part of the American company's women’s road range, the Trek Lexa 4 Women’s Road Bike 2017 features all the components you need to head out for day-long adventures on the road and explore. The main upgrade between the Lexa 3 and the Lexa 4 is the long-lasting, durable and high-performing Shimano Tiagra 4700, 10-speed groupset that’s perfect for spinning up the climbs or speeding along the flats.
Trek’s WSD-specific frame, Women’s Specific Design, allows you to remain comfortable on the bike at all times due to the enhanced sizing and fitting that’s specific to the female form. The lightweight and durable 100 Series Alpha Aluminium frame construction absorbs the roads bumps and vibrations for a much more enjoyable ride.
Trek’s carbon road fork has been incorporated to further lighten the weight of the overall bike, whilst also offering a more stable front end. This fork soaks up any vibrations the road may have to offer, alleviating any numbness you may get in your hands or shoulders.
A wide range of gearing is ideal if you want to head out and tackle hills and unexplored roads, and that’s exactly why Trek have incorporated the Shimano Tiagra 4700, 10-speed groupset. With a 20-gear range, this groupset is perfect for spinning up climbs and testing your performance, and as it’s mechanical, can be fixed by the roadside without an issue if anything does go wrong.
Bontrager T1 clincher tyres and Bontrager AT-750 double-walled alloy wheels combine to give a stiff and efficient ride. The wheels stay strong and ready for you to power you put through them. These tyres are highly-resistant to punctures and command a low rolling resistance, meaning you’ll go faster with less effort and maintain speed for longer.
Finished with Bontrager components, from the women’s specific Bontrager Ajna Comp Saddle, to the Bontrager Elite stem with computer and light mounts, you’ll be riding comfortably and efficiently for years to come.
Upgrades from Lexa 3:
Image shown for representation of colour way only, specification subject to change at any time. Bicycles do not come with pedals unless otherwise specified.
FRAME | Trek 100 Series Alpha Aluminium, mudguard and rack compatible |
FORK | Trek carbon road |
HEADSET | 1-1/8" integrated, semi-cartridge bearings |
STEM | Bontrager Elite, 31.8mm, 7 degree, w/computer and light mounts |
HANDLEBARS | Bontrager Comp VR-S, 31.8mm |
FRONT BRAKE | Alloy dual-pivot |
REAR BRAKE | Alloy dual-pivot |
BRAKE LEVERS | Shimano Tiagra 4700, 10-speed |
FRONT DERAILLEUR | Shimano Tiagra 4700 |
REAR DERAILLEUR | Shimano Tiagra 4700, 10-speed |
SHIFT LEVERS | Shimano Tiagra 4700, 10-speed |
CASSETTE | Shimano Tiagra 4700, 11-32, 10-speed |
CRANKSET | Shimano Tiagra 4700, 50/34 (compact) |
FRONT WHEEL | Alloy hubs; Bontrager Tubeless Ready rims |
REAR WHEEL | Alloy hubs; Bontrager Tubeless Ready rims |
FRONT TYRE | Bontrager R1 Hard-Case Lite, clincher, 700x25c |
REAR TYRE | Bontrager R1 Hard-Case Lite, clincher, 700x25c |
SADDLE | Bontrager Ajna Comp |
SEATPOST | Bontrager alloy, 2-bolt head, 27.2mm, 8mm offset |
All our bikes are fully built, checked, tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. All you have to do is add the pedals (if included), attach the handlebars to the stem and tighten them following the included detailed instructions or by watching our video and using the provided FREE tools. Visit our Bike Assembly page to see how you assemble your new bike once you receive it.
All bikes collected from our shop, are built, tested and ready to ride. For hassle-free home delivery and bike set-up from a qualified mechanic use our Premier Delivery Service.
Please note, occasionally, manufacturers may change the specification without notice. Bicycles do not come with pedals unless otherwise specified. Bikes ordered for delivery will not arrive with the pedals installed, please refer to the owners manual and pedal installation guides provided for guidance. We do not install accessories to bikes, including mudguards. Bikes ordered for delivery that have tubeless compatible tyres and rims will arrive with inner tubes installed or with tubeless valves installed, this will be brand dependent. Sealant is available to be purchased separately.
If you require any assistance please contact our Customer Care team.
Delivery & Returns
Reviews
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Q&A
Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".
Oh, dear. You tried too many passwords and now your account has been locked for the next 30 minutes.
Not sure of your password? Reset using the link below.
We've sent you an email to reset your password.
To create your new password, click the link in the email and enter a new one. Didn't receive the email? Check your junk email.
Please enter your registered email address below and we'll send you an email explaining the next step.
Select a store
Select the store you visit most frequently below and their stock information will show on product pages.
Important Update for Our Canadian Customers
We regret to inform you that shopping on Sigma Sports is temporarily unavailable for customers based in Canada.
We understand how disappointing this may be and sincerely apologize for any inconvenience caused. Please rest assured that we are actively exploring solutions to resume service and find the best way to support our Canadian community.
We appreciate your patience and understanding during this time, and we look forward to welcoming you back as soon as possible.
If you require any further assistance, please reach out to the customer services team
— The Sigma Sports Team