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Das S.I.R. 9 ist optional als Single-Speed Bike oder Multi-Speed-Bike einsetzbar und vermittelt mit seinem fantastischen Reynolds Rahmen das Gefühl „Steel is Real“. Das S.I.R. 9 basiert auf denselben Niner-spezifischen Reynolds 853 Rahmenrohren wie das M.C.R. und verfügt zusätzlich über unser ultra leichtes exzentrisches Innenlagergehäuse. Die Breezer-Style-Ausfallenden eröffnen die Möglichkeit, die Schaltwerksbefestigung abzunehmen, um beim Single-Speed-Betrieb die klare Linie zu gewährleisten. Das Innenlager-System EBB von Niner ist mit nur 100 g das leichteste exzentrische Innenlager-System auf dem Markt. Abgesehen vom geringen Gewicht, hat das EBB einen deutlich größeren Einstellbereich als andere Designs, was zur leichteren Einstellung der Kettenspannung führt und die Verwendung von konventionellen Ausfallenden ermöglicht.
Das S.I.R. 9 ist absolut universell einsetzbar. Es kann spontan als Single-Speed-Racer verwendet werden, um im nächsten Moment mit 27 Gängen bei der Tansalp Challenge an den Start zu gehen. Wer nicht sicher ist, welches Setup das richtige für den Einsatz ist, kann mit dem S.I.R. 9 alle Bike-Varianten ausprobieren. |
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Das S.I.R. 9 ist optional als Single-Speed Bike oder Multi-Speed-Bike einsetzbar und vermittelt mit seinem fantastischen Reynolds Rahmen das Gefühl „Steel is Real“. Das S.I.R. 9 basiert auf denselben Niner-spezifischen Reynolds 853 Rahmenrohren wie das M.C.R. und verfügt zusätzlich über unser ultra leichtes exzentrisches Innenlagergehäuse. Die Breezer-Style-Ausfallenden eröffnen die Möglichkeit, die Schaltwerksbefestigung abzunehmen, um beim Single-Speed-Betrieb die klare Linie zu gewährleisten. Das Innenlager-System EBB von Niner ist mit nur 100 g das leichteste exzentrische Innenlager-System auf dem Markt. Abgesehen vom geringen Gewicht, hat das EBB einen deutlich größeren Einstellbereich als andere Designs, was zur leichteren Einstellung der Kettenspannung führt und die Verwendung von konventionellen Ausfallenden ermöglicht.
Das S.I.R. 9 ist absolut universell einsetzbar. Es kann spontan als Single-Speed-Racer verwendet werden, um im nächsten Moment mit 27 Gängen bei der Tansalp Challenge an den Start zu gehen. Wer nicht sicher ist, welches Setup das richtige für den Einsatz ist, kann mit dem S.I.R. 9 alle Bike-Varianten ausprobieren.
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No more creaks, no more rounded EBB shells, no more debate about which system is best. Niner’s new Bio-Centric bottom bracket system eliminates ALL of the issues with any eccentric bottom bracket system in an amazingly simple way: It’s a two piece design.
One of the Bio-Centric’s cups goes into the frame on the driveside of a normal 68mm EBB shell. The other goes into the frame on the non-drive side. There is an offset bolt that goes in from the non-drive side cup and threads into the drive side cup. The combination of this offset bolt, and the close tolerance of the Bio-Centric cup’s internal fit means that the threads for the bottom bracket line up automatically. Rotate one cup around the EBB shell, and the other will rotate with it, keeping the threads for the bottom bracket aligned. Any minor mis-alignment of these threads will be corrected once the bottom bracket and cranks are installed.
The final part of the puzzle, the one that solves all of the current EBB problems, are the flanges on the outside of the Bio-Centric’s cups. These flanges go ALL the way around the EBB shell, and clamp down against the side wall of the shell as the offset bolt is tightened. |
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No more creaks, no more rounded EBB shells, no more debate about which system is best. Niner’s new Bio-Centric bottom bracket system eliminates ALL of the issues with any eccentric bottom bracket system in an amazingly simple way: It’s a two piece design.
One of the Bio-Centric’s cups goes into the frame on the driveside of a normal 68mm EBB shell. The other goes into the frame on the non-drive side. There is an offset bolt that goes in from the non-drive side cup and threads into the drive side cup. The combination of this offset bolt, and the close tolerance of the Bio-Centric cup’s internal fit means that the threads for the bottom bracket line up automatically. Rotate one cup around the EBB shell, and the other will rotate with it, keeping the threads for the bottom bracket aligned. Any minor mis-alignment of these threads will be corrected once the bottom bracket and cranks are installed.
The final part of the puzzle, the one that solves all of the current EBB problems, are the flanges on the outside of the Bio-Centric’s cups. These flanges go ALL the way around the EBB shell, and clamp down against the side wall of the shell as the offset bolt is tightened.
By using the sides of the shell to secure the EBB, Niner eliminates ANY possibility of rounding out the EBB shell, one of the plaguing problems of current EBB systems. In addition, by having 360° of contact around the EBB shell, the Bio-Centric’s cups SEAL the EBB from dirt and grime, which are the number one cause of creaking in other EBB systems. This seal also keeps moisture out of the system which is the key to noiseless EBB operation.
The Bio-Centric EBB has gone through over a year and a half of real world and simulated fatigue testing before we finalized the design, including a brutal CEN chain torque fatigue simulation test that put the Bio-Centric through it’s paces. The new EBB design went 100,000 cycles with no slipping or breakage.
Simple, light, and strong, we feel like the Bio-Centric is the perfect solution to chain tensioning needs. With one 6mm hex wrench, the EBB can be adjusted on the fly and in the field, and it’s still the lightest EBB system on the market.
Welcome to the new standard in EBB design, the Niner Bio-Centric EBB.
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Chris and Steve, Niner's founders, talk about the features of the S.I.R. 9. VIEW VIDEO | |
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Chris and Steve, Niner's founders, talk about the features of the S.I.R. 9. VIEW VIDEO | |
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- All measurements based on a FOX 80mm travel fork with 44mm rake offset and the EBB in the 6 o'clock position
- 27.2mm seat post, 400mm length recommended
- 73mm bottom bracket shell
- 28.6 front derailleur clamp, bottom pull, low mount (top swing)
- 29.6mm seat clamp diameter
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| SMALL (IN/MM) | MEDIUM (IN/MM) | LARGE (IN/MM) | X-LARGE (IN/MM) | | (A) EFFECTIVE TOP TUBE LENGTH | | 23.1/587 | 23.75/603 | 24.5/622 | 25.25/641 | | (B) SEAT TUBE LENGTH | | 15.5/394 | 16.5/419 | 19/483 | 21.5/546 | | (C) CHAIN STAY LENGTH | | 17.3/440 | 17.3/440 | 17.3/440 | 17.3/440 | | (D) FRONT CENTER | | 25.3/643 | 25.8/656 | 26.5/673 | 27.3/693 | | (E) WHEELBASE | | 42.3/1073 | 42.7/1085 | 43.5/1104 | 44.3/1124 | | (F) BB DROP | | 2.8/70 | 2.8/70 | 2.8/70 | 2.8/70 | | (G) HEAD TUBE LENGTH | | 3.5/90 | 3.9/100 | 4.3/110 | 5.1/130 | | (H) SEAT TUBE ANGLE | | 73° | 73° | 73° | 73° | | (I) HEAD TUBE ANGLE | | 71.5° | 72° | 72° | 72° | | STAND-OVER HEIGHT | | 27.8/706 | 28.6/728 | 30.7/780 | 32.8/832 | | HEIGHT RECOMMENDATION | | 5'3"-5'9"/ 1.6-1.75m | 5'8"-6'/ 1.73-1.83m | 5'11"-6'3"/ 1.8-1.91m | 6'3"-6'7"/ 1.91-2.01m |
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 | "Niner is the only multi-bike brand based entirely around 29" wheels. Its deveotion to the 'big revolution', as it calls it, is showcased beautifully in the S.I.R. 9."
 DOWNLOAD COMPLETE REVIEW
|  | "The S.I.R. 9 is light, fast, flexible, and comfortable for the long haul. It is an alternative to complicated and expensive full-suspension bikes for those riders who appreciate the simpler things in life."
DOWNLOAD COMPLETE REVIEW
|  | Best of MTBr 2007, 2008 & 2009
Three Time Winner
MTBr.com Reader’s Award
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The S.I.R. 9 frame retails for $849.00 and includes the Niner Bio-Centric Bottom Bracket and both singlespeed and rear-derailleur compatible dropouts. To order a Niner bicycle, find and contact your local dealer here. If you do not have a local dealer, contact us. |
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The S.I.R. 9 frame retails for $849.00 and includes the Niner Bio-Centric Bottom Bracket and both singlespeed and rear-derailleur compatible dropouts. To order a Niner bicycle, find and contact your local dealer here. If you do not have a local dealer, contact us. |
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| "Niner is the only multi-bike brand based entirely around 29" wheels. Its deveotion to the 'big revolution', as it calls it, is showcased beautifully in the S.I.R. 9."
| | Best of MTBr 2007, 2008 & 2009
Three Time Winner
MTBr.com Reader’s Award
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