BMC Twostroke AL
Best aluminum hardtail frame for budget-conscious cross-country mountain bikers.
This is the BMC Twostroke AL, a fantastic bike available from Marin Service Course. It was previously listed at a regular price of $849.00 USD but is currently on sale for $699.00 USD. It seems to be sold out at the moment, but you can check out the available color options which included 24 Gunmetal / Black, 24 Neon Red / Grey, 20 Poison Green / Black, and 20 Turquoise / Black. You might even be able to finance your purchase with options available through Shop Pay Installments or Affirm!
$659.00
Owner Satisfaction
4.5
/ 5
Category Rank
457
/ 597
#457 in Bicycle Frames
Price vs Category Average
-58%
Below average
Who it's for
- Racers seeking stability on technical descents
- Aggressive riders prioritizing frame durability over weight
- Budget-conscious cyclists wanting premium race-proven geometry
Who should skip it
- Competitive climbers sensitive to extra frame weight
- Riders preferring a compliant, vibration-dampened ride feel
- Performance enthusiasts needing high-end, lightweight components
Performance breakdown
Frame Geometry
Aggressive trail-ready angles provide exceptional stability on technical descents.
Material Stiffness
Premium aluminum construction ensures efficient power transfer during steep climbs.
Weight Efficiency
Lightweight alloy build keeps the bike nimble for rapid acceleration.
Component Compatibility
Standardized sizing makes upgrading drivetrain and cockpit parts straightforward.
Aesthetic Design
Striking colorways and clean lines define this modern hardtail silhouette.
Versatility
Capable frame design handles everything from cross-country racing to trail riding.
Know before you buy
The Twostroke AL is a dedicated cross-country hardtail frame. It is built for riders who prioritize efficiency, climbing performance, and precise handling on technical singletrack.
Yes, it utilizes BMC’s progressive geometry, which features a slack head tube angle for stability on descents and a steep seat tube angle for efficient power transfer while climbing.
Yes, the frame is designed with internal cable routing to protect your housing from trail debris and provide a clean, streamlined aesthetic.
The Twostroke AL uses a threaded bottom bracket, which is widely appreciated for its reliability, ease of maintenance, and resistance to creaking compared to press-fit alternatives.
Yes, the frame is compatible with internal dropper post routing, allowing you to easily integrate a dropper for better control on technical terrain.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$659