NAIROBI'S
PREMIUM
GYM
A refined training experience in Karen for people who value their time, personal attention and measurable results.
PRECISION
PERFORMANCE
DRIVEN
Your first scan, trainer review, nutrition guidance and app walkthrough turn your goals into a program you can actually follow.
TRAIN
WITH REAL
SUPPORT
At Onyx, your goals are known, your progress is noticed, and your absence is followed up because consistency matters.
Why Choose Onyx
A calm, considered gym experience for Nairobi members who expect more: exceptional equipment, measurable progress, professional standards and personal attention from a team that remembers why you joined.
Quarterly Body Scans
Start with a body composition scan, review it with a trainer, and track progress on a consistent quarterly rhythm.
Structured Onboarding
New members get a welcome call, first scan, trainer review and clear next steps in their first week.
Deep Strength Floor
Train with more than 70 pieces of DHZ Titan Extreme commercial strength equipment in Karen.
WNQ Cardio Zone
Commercial cardio equipment for conditioning, endurance work and daily consistency.
Professional Trainers
Capable trainers held to clear quality standards for onboarding, floor support, classes and personal training.
Member Care
Your goals are recorded, milestones are recognized, and the team follows up when your training rhythm drops.
Built for measurable
progress in Nairobi
About Us
Premium fitness, made personal
Onyx Fitness is a premium Kenyan fitness brand created for professionals, families and committed trainees who expect more. Our Karen club combines high-performance equipment, body composition tracking, thoughtful programming and attentive support, with a vision designed to grow into leading neighbourhoods across Kenya.
70+ DHZ Titan Extreme Strength Pieces
Quarterly Scans & Progress Tracking
- Every new member starts with onboarding, a first scan, trainer review and clear next steps.
- Member care tracks attendance, celebrates milestones and follows up when consistency drops.
Built for experienced lifters, returning members and first-timers
who want progress
Membership
Choose your commitment
Start with access to the gym experience. Longer memberships include Premium Onyx Companion app access for programs, scans and progress tracking.
News & Updates
Latest from Onyx
Locations
Visit Onyx in Karen
Our current club is located at One Stop Arcade on Langata Road, serving Karen, Hardy, Miotoni and Lang'ata. Onyx is built as a premium Kenyan fitness brand for discerning communities across Nairobi and, as we grow, other leading neighbourhoods in Kenya.
FAQs
Before
You Join
What time does Onyx open and close?
Onyx is open Monday to Friday from 5:00 AM to 10:00 PM, and Saturday to Sunday from 6:00 AM to 6:00 PM.
Can I tour the gym before joining?
Yes. Your tour starts with a real conversation about your goals, then covers the strength floor, cardio and functional areas, scanner, class space, and next steps.
What happens when I join?
New members receive a welcome call, first body composition scan, trainer review, nutrition guidance where applicable, app setup, and a first-week check-in.
Do longer memberships include the Onyx Companion app?
Yes. Members on 6-month, annual, and 24-month plans receive Premium app access for programs, scan integration, and progress tracking.
Get Started
Start With
A Real
Plan
Tour the facility, talk through your goals, see the scanner, and choose the membership that matches how you want to train.