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Token TK877TBT Tiramic Bottom Bracket
| Black | BSA MTB 68 / 73mm | Add this item to your wishlist | ||||
| Gold | BSA MTB 68 / 73mm | Add this item to your wishlist | ||||
| Gold | BSA Road 68mm | Add this item to your wishlist | ||||
| Gold | Road Italian 70mm | Add this item to your wishlist | ||||
| Grey | BSA Road 68mm | Add this item to your wishlist | ||||
| Grey / Silver | 70mm IT Road | Discontinued - no longer available | ||||
Integrated Bottom Bracket featuring the all new Tiramic bearing system
Integrated Bottom Bracket featuring Solid ceramic balls with Titanium coated bearing surfaces for smooth running, these are 60% lighter than steel balls and proven to offer less transmission resistance
Bicycle bottom brackets connect the cranks to the bike and allow the crank arms to rotate. There are various sizes of bottom bracket shell on the market, so compatibility needs to be checked. The three most common frame bottom bracket shell widths are 68mm (English threaded road and mtb), 70mm (Italian threaded road) and 73mm (British threaded mtb). There are also many axle shapes and styles, from JIS or ISO square tapers through to the round splined axles such as ISIS or Octalink and then there is the new external cup systems which have the axle built into the crank arms. Some frames are now using the new BB30 system which uses bearings pushed directly into the frame and removes the needs for cups to be threaded into the frame.
Token Products have entered into the new design dynamic that only carbon fiber can bring to the cycling industry. Having methodically increased their product line to include frames, cranks and bars, they now have a comprehensive range, offering distributors an exclusive opportunity to market cutting edge products. Token commissions the finest manufacturers worldwide and can ensure top quality products at very reasonable pricing. At Token, they understand the importantce of visual communication and design... Your Token, our commitment...
We've only had one sample of Token's Tiramic ceramic bearing bottom bracket to play with, but so far it's not bad.
With titanium nitride coated bearing races using super hard, super smooth ceramic balls, it's certainly silky and light to start with. It's a very tempting price for a ceramic bottom bracket too.
Keeping it smooth depends on regularly popping off the basic seals and cleaning and regreasing the bearing faces. We had to do this a month into winter when early grind set in, but it's been trouble-free since.
Not fit-and-forget, but they're cheap, light and smooth if you keep up the TLC
All that glisters... may just be coated in titanium nitride, just like Token's Tiramic bottom bracket bearings. Back in June they found their way into the editorial Time Edge Racer, since when they have completed the Dragon Ride, London-Paris, the Tour of the Hills and plenty more. Far and hard enough, then, to give an initial assessment of what is an important component of the bike.
Fitment of the Shimano-compatible EX-Type bottom bracket bearing assembly is as easy as fitting Shimano's own bracket; the same tool fits, the threads are cut with the same precision and, since the Token cups are machined from aluminium alloy, there is some marking of the splines afterwards. Installation of the cranks is equally straightforward.
Turning the cranks by hand suggests, backed up by counting turns, that they spin a little more freely than the OE ones, perhaps thanks to lighter seals. Since the balls are harder than steel, they deform less and require less constrictive seals.
Once in the saddle, the sensation is of enhanced smoothness and rigidity. That's not to say I'd guarantee to be able to discern any difference in a 'blind' test, but even a placebo effect is welcome when it comes to turning pedals. More impressive is the definite weight difference, due to the 40percent lighter balls, and the complete lack of deterioration over a couple of thousand kms of hard riding in all weathers. The surface treatment looks as good as new, the cranks turn with the same silken solidity and the seals are unsullied by weeping grease. Maybe I'll stick them in the Roberts over winter and give 'em a real hard time.
Smooth, so smooth
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