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Jun 2024 · Alan Muldoon
Polygon builds on the success of the popular Siskiu T series analogue trail/enduro bikes, by going all in on a sleek new e-bike version with the same progressive geometry and ride-hard attitude. There are currently only two models in the range and we are testing the top-end Siskiu T7E. But can £4k really get you an enduro worthy e-bike? And is it worthy of a spot on our list of best budget e-bikes? Time to find out. Polygon Siskiu T7E Need to know Enduro ready e-bike with a Shimano EP801 motor Shimano 630Wh removable battery 29in wheels as standard Geometry flip-chip for MX wheel conversion Fully adjustable SR Suntour suspension 150mm travel fork, 144mm travel frame Four-piston Shimano SLX brakes Shimano SLX 12-speed drivetrain Weight 24.62kg (54.28lb) size L Frame and geometry The burly aluminium Siskiu T7E frame is designed around Shimano’s excellent EP801 motor and 630Wh removable battery. It comes stock with 29in wheels, but the frame also sports a flip-chip to correct the geometry for an MX setup with a smaller 27.5in rear wheel. Now, given that Polygon offers the Siskiu T7E in four frame sizes, S to XL, and that the flip chip is such a great feature, we’d like to see Polygon deliver the size small and medium bikes with the 27.5in rear wheel as standard, as this would offer shorter rider more room to get off the back of the bike on steeper descents without buzzing the rear tyre. With a short 435mm seat tube, our size L test bike had plenty of standover clearance. It also had considerably slacker and lower geometry than claimed – 2º slacker at the head tube and 12mm lower in BB height! It was also the only bike in test with a relatively short 445mm chainstay length. Taken together, the Polygon instantly felt like a modern enduro e-bike. No bad thing, right? And that wasn’t the only anomaly. We couldn’t find the claimed frame travel for the Siskiu T7E anywhere on Polygon’s website, but seeing as we measure all of our test bikes, we know for sure that the Siskiu T7E pumps out 144mm of vertical rear wheel travel. Overall, the details on the alloy frame are neat. The bridgeless seatstays offer stacks of mud clearance, but we’d like to see the chainstay protector extend all of the way along the chainstay, like on the Decathlon Rockrider in this group test, because even after a couple of rides the paint was chipped next to the chainring where the chain had been hitting the frame. Not only would this protect the frame finish, it would also ensure an overall quieter ride. Suspension Most entry-level e-bikes don’t come with all of the top-end suspension bells and whistles. That’s clearly not the case with the Polygon, the SR Suntour suspension offering both adjustable rebound and compression damping and then some. The piggyback Suntour TriAir2 3CR rear shock features rebound adjustment and a three-position compression lever to firm things up for climbing. And …Continue reading »
* Great handling and geometry
* Shimano EP801 motor + 630Wh battery
* Fully adjustable suspension
* Shimano SLX gears + wide-range cassette
* Flip-chip for MX wheel option
* The battery fell out, three times
* Hard compound tyres limit grip
* Suntour rear shock blew after two rides
* Geometry slacker than claimed (actually that’s a positive!)
May 2024
If you’re working with a $5k budget and seek a capable and comfortable E-Enduro rig, then the Polygon Collosus N8E is a very solid offering.
Apr 2024 · Tyler Benedict
Polygon is working on a lightweight eMTB with a unique shock layout inside a new linkage design. They also had an ultra-shiny blue DH bike!
Mar 2024
The Polygon Tambora G7 packs a ton of features (adjustable geometry anyone!) into a low its small price tag! But high value on ...
Dec 2023
The aluminum-framed Polygon Bend R9X gravel bike, with premium components, offers a distinctive alternative in the carbon-dominated gravel bike market, though its unique features may not suit everyone based on testing.
Carbon wheels and SRAM Rival AXS drivetrain are the highlight of a pretty solid spec for the price
Aggressive geometry capable of pushing the limits of “traditional” gravel riding
Generous mounting options on frame and fork
Aluminum frame felt harsh on washboard roads and pocked trails
RockShox Reverb AXS post was too short for low-slung frame
Dec 2023
The Polygon Bend R9X is a unique gravel bike; it features high end components like wireless shifting and carbon wheels bolted to ...
Q: Which Polygon bikes are most popular?
The most popular Polygon model families are the Siskiu, Strattos, and XTRADA.
Q: Does Polygon make eBikes?
Yes, Polygon manufactures both conventional bikes and e-bikes.