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  • Assos iJ.bonkaCENTO.6 Jacket - Men's
  • Assos iJ.bonkaCENTO.6 Jacket - Men's
  • Assos iJ.bonkaCENTO.6 Jacket - Men's Collar
  • Assos iJ.bonkaCENTO.6 Jacket - Men's Fabric Detail
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  •  - Fabric Detail
AssosiJ.bonkaCENTO.6 Jacket - Men's
Sale 55% Off$206.55 - $229.50

Item # AAS0069

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  • Black Volkanga, TIR ($206.55)
  • Red Swiss, TIR ($229.50)
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Item # AAS0069

Slim down to warm up.

The Assos iJ.bonkaCENTO Jacket highlights the commitment the Swiss apparel maker has to providing top notch racing apparel, even when the temperatures drop. It's similar to the bonkaMILLE in the evolution of the airJack, except the CENTO leaves room for much more than a tight base layer underneath. It uses Assos slimFit tailoring for the competition cycling body type. With a wind-proof front and sleeves and possessing a great close fit, this jacket is a windproof jacket where you need it to be and a jersey everywhere else. Assos stepped up their game again; they went back to the drawing board and came up with the iJ.bonkaCENTO Jacket, to stay one step ahead of competitors.

The bonka is partially windproof, partially not. That's how it gets the climaRange 6 designation, which is considered the above-freezing temperatures of winter. The chest and arm panels that face the wind take advantage of Assos TwinDeckFoiling to keep the cold at bay. It has two layers, one windproof and one insulating. The outer layer is the strataGonUltra, their new waterproof/breathable flexible membrane that is less breathable when it's cold and more breathable as the air directly next to the membrane heats up. This allows it to retain more heat when you're cold and to be more breathable once you heat up and start to sweat. The inner layer is Assos' RXQ fabric, a lightweight stretch fabric that is smooth on one side and fleecy on the other. The inner arms are strataGonMedium, a lighter, stretchier, more vapor-permeable version of the Ultra, for better fit and good ventilation. The Medium is also found on the side panels. The back panel is RX fabric, a heavyweight stretch fabric that is alternately smooth and fleecy. And the bottom hem, in the back, has Assos' rear stabilizer to hold the jacket in place.

The bonka also does a few new tricks, mainly due to its new CENTO fit designation. Now, the bonka is offered in Assos' traditional comfort fit, MILLE, and in the more race-oriented CENTO fit offered here. There is extra shaping at the elbow for greater comfort. The jacket comes with a thin turtleneck layer you can put on or not, which helps seal the collar from the elements. This touch is doubtlessly inspired by the many cyclists who borrow neck gaiters from ski drawer to help keep their necks warm on the coldest of days. The difference here is that those are typically bulky and this is thin and designed to fit between the collar and your neck.

The Assos iJ.BonkaCENTO Jacket is available in six sizes from Small to TIR and in the colors Black Volkanga, Red Swiss, and White Panther. This jacket falls into Assos' climaRange.6, or in non-Assos-speak, winter. By Assos' calculations, you can expect total protection in temperature ranges from around 28 to 42 degrees Fahrenheit.



Men's Apparel
Leg & Knee Warmers 0 I II  

4ft 11in - 5ft 2in

(150 - 159cm)

5ft 3in - 5ft 6in

(160 - 169cm)

5ft 7in - 5ft 10in

(170 - 179cm)

5ft 11in - 6ft 1in

(180 - 185cm)

6ft 1in - 6ft 3in

(186 - 190cm)

6ft 3in - 6ft 5in+

(191 - 195cm+)

XLG but wider
Arm Warmers0III 















How to Measure:
For best results, take measurements over your underwear.
Measure around the widest part of your chest.

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Assos bonka jacket

  • Familiarity: I've used it once or twice and have initial impressions
  • Size Bought: medium

to be honest, the picture that i saw when i bought the jacket is not the same as the one i received.

Excellent product

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: Medium

Resists cold weather up to manufacturers reviews....!!! Thank you very much good Quálity products....

Alchemy or Engineering?

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: Medium

Given that you're considering dropping five Benjamins on a cycling jersey, this review will run long. Executive summary: Assos used BOTH alchemy and engineering to deliver a truly remarkable cold-weather piece.

The bonkaCENTO "jacket" is cut to the AEPD *jersey* template: [a] it looks & feels a bit off until you bend into a tuck, at which point it is pure perfection, [b] if you are copacetic with the AEPD cut in "stretchier" pieces like baselayers and LS jerseys, you'll likely be fine with the bonkaCENTO, and [c] you'll wear this over a baselayer, but heaven help you if you try to squeeze this on top of a long-sleeve jersey.

Your first glance at the cornucopia of panels may initially strike you as alchemy. After a few rides in the 40s--each including a 2000-2500 foot climb and decent--I can assure you those panels were engineered. This jersey threads a fine needle, balancing keeping you warm AND keeping you dry. The plethora of panels achieves those often contradictory objectives.

The front-facing surfaces stop wind (pardon the pun) cold. That is great when covering the flats to the base of the climb, and it is a godsend on the decent. Killing the wind could tilt you toward overheating and sweating, however, which WOULD come back to chill you to the bone on or post decent.

During the ride, you'll notice the ample ventilation straight away. Early in the ride, in fact, you may find yourself cooler than with other wind stopping jerseys. This is the balancing act in action: as the ride progresses, all that ventilation serves its purpose. On or post decent, the big payoff is that you'll be drier and warmer.

All of the above may sound overly complex. It is tough to appreciate the brainpower that went into the bonkaCENTO without examining it firsthand. Even a hands-on will leave you asking "what is that panel doing there?" or "what's with all these different materials?"

The proof is in the riding: mid 40s on the flats, 40 degrees at the top of the climb, 30 MPH on the decent, 50 degrees on the way home ... entirely comfortable throughout. Far more comfortable than any other jersey I've owned.

I dunno' if it is alchemy or engineering. I *do* know that it works.

Avg. ride time: 1h 17m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Really nice

  • Familiarity: I've put it through the wringer
  • Fit: True to size

You can wear it under any weather and condition! Really great

How is this different from BonkaMille Jacket?

fits more closely.

Best piece of cycling clothing ever

    First ride this morning in OZ, -1 degrees Celsius and this jacket felt fabulous. The fit is perfect, arms, neck, body. Looks good. Well worth the money. Thanks Competitive Cyclist and Assos. Very happy customer

    Sizing was perfect for me, usually an M jersey. So an L Jacket was just fine with an undershirt