First Look: 2021 Polygon Siskiu T - Modern Geometry, Modest Price
Polygon have updated their Siskiu T series of bikes for 2021 with revised tubing, updated geometry, and even lower prices. The bike is available in two different models, both aimed at delivering plenty of performance at a good value, with prices starting at $1,799 USD for a complete bike.
Through owning their own manufacturing facilities, Polygon claim they are able to control all of the aspects related to developing a bike, which helps them be more efficient, bringing more value to the person purchasing and riding the bike.
The new Siskiu T is designed around Polygon's "Wheel Fit Size System." The small size rolls on 27.5" wheels, the medium is compatible with both 27.5" or 29" wheels and the large-XL sizes are designed around 29" wheels. 29" models of the bike have 135mm of rear-wheel travel mated to a 140mm fork and the smaller wheels get 140mm of rear travel and a 150mm fork.
Through owning their own manufacturing facilities, Polygon claim they are able to control all of the aspects related to developing a bike, which helps them be more efficient, bringing more value to the person purchasing and riding the bike.
The new Siskiu T is designed around Polygon's "Wheel Fit Size System." The small size rolls on 27.5" wheels, the medium is compatible with both 27.5" or 29" wheels and the large-XL sizes are designed around 29" wheels. 29" models of the bike have 135mm of rear-wheel travel mated to a 140mm fork and the smaller wheels get 140mm of rear travel and a 150mm fork.
Siskiu T Details
• Wheel size: 27.5" (S, M) 29" (M-XL)
• Aluminum frame
• Travel: 140mm (27.5"), 135mm (29")
• 65-degree head angle (27.5") 65.5-degree (29")
• 425mm chainstays (27.5") 430mm (29")
• Sizes: S-XL
• Price: $1,799 - $2,299 USD
• polygonbikes.com
• Wheel size: 27.5" (S, M) 29" (M-XL)
• Aluminum frame
• Travel: 140mm (27.5"), 135mm (29")
• 65-degree head angle (27.5") 65.5-degree (29")
• 425mm chainstays (27.5") 430mm (29")
• Sizes: S-XL
• Price: $1,799 - $2,299 USD
• polygonbikes.com
Polygon have their own factory, which gives them the ability to have a great deal of control in the development and manufacturing process of a bike.
Frame Details
The frame is now designed to fit a water bottle inside the front triangle on all sizes. The seat tube lengths are shorter than before, and there's a 150mm dropper post on the SM-MD and 170mm on the LG and XL. There is a threaded bottom bracket, Boost spacing, and internal cable routing throughout the main frame.
Internal cable routing and integrated chainstay protection on the Siskiu T.
Geometry
The Siskiu T's updated geometry sees the reach stretching an additional 25-30mm on all sizes from the previous model, measuring 460mm for a size Medium. The head tube angle is 1-degree slacker than before, measuring 65-degrees for the small and medium 27.5" frames and 65.5-degrees for the 29" frames. Chainstays are 425mm on the small and medium 27.5" wheeled setups and 5mm longer for the 29" edition. Seat tube angles measure 76.5-degrees across all models and sizes.
Suspension
The Siskiu T utilizes a linkage driven single pivot design built around a one-piece unibody pivot bridge which Polygon claim reduces the frame's weight while also improving stiffness and reducing lateral flex on the rear shock while under load. The kinematics of the bike are designed to be similar to the previous generation - poppy yet still supportive to keep climbing efficiency and small bump compliance. There is a new custom shock tune with lighter compression and a small reduction in progression which can be further tuned through the use of volume spacers.
The leverage curve is has been modified slightly from the previous version - still highly progressive yet more sensitive. The axle path has also been updated to be more rearward further into the travel, which should enhance performance over square edged impacts.
There are two different models of Siskiu T available, the T8 and T7. The T8 features a Fox 34 Rhythm Boost fork, Fox Float DPS shock, 12-speed Shimano SLX drivetrain, and sells for $2,299 USD. The Siskiu T7 has a RockShox Recon Boost fork, Rockshox Select Plus shock, and Shimano Deore 12-speed drivetrain. It sells for $1,799 USD.
For more details, visit polygonbikes.com. US residents can purchase a Siskiu T on bikesonline.com.
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Also, leaving the top tube free of a shock mount allows for lighter tubing; the downtube already needs to be strong, so its a better place to mount the rear shock. This helps keep the weight & CoG low, and allows any flex/compliance to come from the top part of the bike, while the downtube/chainstays are stiffer, creating a better ride. Like a good pair of skis. Scott had a whole article on this when they released their carbon DH bike.
Or is it like other things I'm hearing about online with companies having no inventory of complete bikes due to supply chain issues?
Status ads everywhere. Not available in the US.
Canyon Sender ads everywhere. Not available until December
Commencal Mullet DH rigs...did they hit yet?
Demo bikes across the U.S.
However, I agree on the looks. I like the looks of the Polygon better.
But I fully agree: it is totally cool and great for the consumer that there are more and more serious sussies around the 2k price-point. That's a lot of money and finally there are good bikes in that budget
That said, if these are in stock often, they'll kill yt entey level sales- as long as they market them.
Not that YTs are ever in stock either....
Fact of the matter is, is that we all don't live in dry, perfect climates. Bikes need a spot for at least one large bottle.
Any company could build a good suspension design if they have the entire inside of the front triangle to work with. That is why I respect companies like Santa Cruz, Norco, Forbidden, Transition, and many others.
I win the internet tonight. Everybody go home. You're not topping that.
#thatsalsowhatshesaid
I dont want to know what you're referring to if she actually said it...
MORE = money/time/"things"...
(No matter if we'll full use, no conscious on how it affects to have)
EASY = no hard work please
I was trying to race a Parrot along a dirt road yesterday on mine.
I thought I was going to win, but after a while: Polygon.
*plays Freed From Desire by Gala*
No one is making 27.5 bikes with less than 150-160
These are also nearly the same price as a good used FS on forums
www.youtube.com/watch?v=zLnEDbEcTfs The boy wanted a trek EX 5 was almost relieved when i found out that they wouldn't be hitting australia until april 2021.
As someone who hasn't bought anything since the wheel size debarcle, this bike gives me a bit of confidence to get with the times
This is what the website says. I tried to find a dealer in the surrounding countries using the Polygon website, but none of the dealers had any kind of international online store, most of them were smaller shops.
Found a few stores in the UK that sells/sold some older Polygon models, but nothing recent so far.
Or they could packaged it as team edition bikes, complete with Trickstuff brakes, Kenda tires, CrankBros seatpost, Spank wheels, Promax cockpit, ODI grips.
*poke @Polygonbikes
My old parts are looking for a decent workhorse frame to put on and I think this is it .
But either way much better than the Recon rl.
Have put down 1500km on it this season and it has been faultless. Not even a single creak (something I can't say about the 36..)
@Frank191: The rhythm has far superior damping than the revelation in my opinion.
Essentially, it is the same as a performance 36, it just doesn’t have magnesium lowers so it’s a bit heavier.
As for negative bb drop, reminds me of those old school big hitting freeride bikes
www.cotic.co.uk/product/solarisMAX#sizing
Orange doesn't quite clear things up as they work with bb height instead.
www.orangebikes.co.uk/bikes/switch-6-rs/2020
Santa Cruz however gives two numbers for their mixed size wheeled bike.
www.santacruzbicycles.com/en-US/bikes/v10
It isn't quite clear from the drawing, but I presume they simply give both numbers as bb drop with respect to the rear wheel (the small number) as well as the front wheel (the larger number).
Liteville has millions of options so I didn't dig into that, but lazy as I am I'd stick with the Santa Cruz measurements I've found here. In case of mixed wheel sizes, they just give both numbers.
calibrebicycles.com/bikes/mountain
Honestly; In the same way that bikes don't come with pedals, they shouldn't come with brakes. Considering everyone has a different opinion on what works and what doesn't.