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Winspace dropped its latest aero highway frames in Japan a number of days in the past. The Winspace M6 (Milemaster) and M5 are the model’s contemporary takes on what a contemporary endurance‑pleasant aero highway machine might be. It’s an evolution of the C5 Aero, and it’s designed not only for racers, however for riders who wish to go quick for hours, deal with rougher roads, and revel in a motorbike that feels steady and environment friendly regardless of the journey size.
Early particulars got here by means of Cycle Sports activities Japan, and whereas Winspace hasn’t formally launched world specs but, there’s already lots we are able to unpack from the launch and leaked imagery.





What’s New with the M6 (and M5)
From the primary pictures, it appears the M6 (and M5) have:
A increased stack and shorter attain than the T1600, so that you’ll sit a bit extra upright, which helps maintain an aero place comfortably over lengthy distances.
A slacker head angle and longer wheelbase, giving it extra stability on quick descents or tough roads.
Dropped seatstays for further consolation and higher airflow.
A deep aero fork (M5 has a thinner fork), T47 backside bracket, and flat‑mount discs (clearly seen in closeups).
Tire clearance marketed as much as 700×32C, and it appears to be like like there may even be room for a bit extra.
In different phrases, the M6 feels very very similar to a 2026‑spec highway body, not a small replace, however a correct new platform constructed for lengthy days and excessive‑pace effectivity.
Who Are the M6 and M5 for?
The brand new ‘Milemaster’ frames aren’t making an attempt to be a pure race bike just like the T1600. As a substitute, they’re Winspace’s reply to a rising demand for bikes which might be quick, snug, and versatile all of sudden. The type of rig that you could tackle an extended fondo, an Ironman bike leg (with highway bars), and even your weekly group journey with out compromise.
They’re additionally 1× and large‑vary 2×‑pleasant, exhibiting Winspace clearly has fashionable endurance riders in thoughts. In case you’re the type of bike owner who needs one bike that may do nearly all the pieces, this appears to be like prefer it.
How Do They Evaluate within the Winspace Vary?
If we zoom out, the M6 and M5 occupy a wise center floor between the model’s current aero choices:
T1550 Gen 2: The basic all‑spherical aero body that’s quick, environment friendly, however nonetheless has a race‑targeted geometry.
T1600: Winspace’s sharpest, most aggressive, and quickest aero body with a decrease stack and information to again up the efficiency claims.
C5 Aero: Winspace endurance aero bike with out correct wind-tunnel testing and information to again up its efficiency.
M6 and M5: Needs to be extra snug, have an extended wheelbase, and be extra steady. It ought to be the bike you’d choose for lengthy coaching rides, endurance races, or surfaces that aren’t excellent.
Particulars from the Japanese Launch
In keeping with Cycle Sports activities Japan, the body makes use of Toray M60 carbon fiber, a prime‑tier materials at this value level, recognized for stiffness and excessive power.
Right here’s some data on Japanese pricing and specs. Bear in mind, the worldwide pricing has not been launched but.
Body set: ¥308,000 (~$1,980)
Full bike with Shimano 105: ¥448,000 (~$2,880)
Full bike with Shimano 105 Di2: ¥498,000 (~$3,200)
Full bike with Shimano Ultegra Di2: ¥728,000 (~$4,680)
Body weight: ~900g
Fork: ~450g
Seatpost: ~130g
Tire clearance: 700×32C
There’s additionally a second‑tier sibling, the M5, geared toward riders who need a extra finances‑pleasant, all‑spherical aero choice with out giving up the identical design philosophy.
Body set: ¥268,000 (~$1,730)
Full bike with Shimano 105 (base): ¥348,000 (~$2,240)
Full bike with Shimano 105 (particular version): ¥398,000 (~$2,560)
Full bike with Shimano 105 Di2: ¥728,000 (~$2,950)
Body weight: ~1050g

Remaining Ideas
I’m curious to study extra about these frames, however one factor is obvious: Winspace’s highway body lineup is getting crowded, and among the older fashions (just like the C5 or C5 Aero) will quickly need to be eliminated to not confuse prospects.
How do you just like the M6 and M5 visually? The fork on the M6 appears too daring to me, and it’s not my cup of tea, however I like that Winspace unified their design language (discover the sharp head tube, seatstays, and fork ends).
Preview image supply: instagram.com/asokeisuke









