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Niner BSB 9 RDO Frameset

Item #: FR201E02
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Niner BSB 9 RDO Frameset

Niner BSB 9 RDO Frameset

Blood, Sweat, & Beers! The embodiment of cyclocross

Timing the “gravel” wave to perfection, Niner launched the RLT 9 in 2013 as their first ever 700c drop-bar offering. An aluminum frame, a slack head angle, longer chain stays, a lower bottom bracket, and a broader wheelbase; it was clear that the RLT 9 is not intended to be a dedicated cross bike, but more so a do-all fun machine, respectively. The release of the RLT 9 triggered the imagination wheel to turn. Was the RLT 9 a foreshadowing into the world of drops and knobs from Niner? Like a dream come true, entered the Niner BSB 9 RDO. Amongst the pandemonium of cyclocross racing, blood, sweat, and beer (BSB) is often sacrificed as a means of triumphing the top step of the podium. No double takes needed to see that the Niner BSB 9 RDO is a born and bred cyclocross racing machine that is willing and able to deliver you there.

As the BSB 9 graces the cross scene with Niner’s beloved mountain bike heritage, it also introduces a cutting edge carbon fiber frame production process known as Carbon Compaction System. Niner’s Carbon Compaction System uses a pre-shaped Styrofoam mold encased by a bladder that the carbon is then laid around. The firm Styrofoam core provides the desired shape of the frame and a solid platform for the carbon lay. The bladder is then inflated to fully compress the carbon against the outer metal mold for accurate compaction and a smooth inside wall, producing a fruitful list of benefits. First, it sets the carbon in the exact position it should be in without any shifting from a bladder inflating after layup. Secondly, it reduces the amount of excess resin to pool inside the frame, meaning lighter weight and less wasting. Lastly, it enables the inside wall to be free of wrinkles and loose fibers, resulting in fewer potential weak spots.

The overall shape of the tubing is intensively designed to meet the demands of cyclocross racing, including the iconic art of shouldering the bike. Cross-junkies will find friendly flats, comfortable shoulder positioning and attentive placement of cables to aid in the best cyclocross technique. There are zero guides inside the front triangle, while external rear brake routing on the side of the downtube keeps everything out of the way when shouldering. Full length housing is employed on the front and rear for clean crisp shifting in the most unforgiving Winter conditions. Internal routing with a large access windows makes upkeep easy, and allows simple Di2 routing for riders with electronic shifting. When you are on the bike, the post mount rear brake helps to prevent heel strikes and brake rub, keeping you hasty and capable. Utilizing a Press Fit 30 bottom bracket, the frame features a beefier shell that seamlessly meets the thick downtube for superior power transfer, and allows the use of a lighter, stiffer crankset.

The sub-1000 gram RDO carbon layup race frame offers unfathomable amounts of stiffness for slodging through mud and kicking up fly-overs. Featuring a cross-specific geometry, including a steep head angle, the BSB 9 will see you through tight corners and sprint finishes, while the bottom bracket height is specific to crank length for better clearance on off camber course features. Niner applies their rigid carbon fork expertise into the BSB’s front end to offer the off-road ride quality that dedicated cross racers need to thrive. The BSB fork combines the tapered head tube with the 15mm front axle for unmatched front end stiffness and maneuverability. The flatter edges on the fork enhance lateral stiffness and prevent race-killing brake rub.

From its weight-saving Carbon Compaction System frame production process, to it shouldering friendly geometry, the BSB is fine tuned in every way for life between the tape, under the beer showers, and atop the podium.


Bikerumor - "Niner proved they could translate their mountain bike heritage into something new."

Dirt Rag - "With a sub-1,000 gram frame, full carbon fork and a suite of top notch components, it’s a no-compromise race bike..."


  • RDO carbon layup for no-compromise stiffness, strength and ride quality
  • Cyclocross specific geometry for race bike handling and agility
  • Tapered head tube for front end stiffness, strength and steering precision
  • 142x12mm rear thru axle and 15mm thru axle fork for stiffness and efficiency
  • Tire clearance for up to a 40c tire
Frame BSB 9 RDO, carbon fiber
Wheel Size 700c
Fork Niner full carbon RDO, 15mm
Headset Included No. Compatible with - IS42/28.6 IS52/40
Headtube Diameter Tapered 1.125"-1.5"
Front Derailleur 34.9 High mount front derailleur, bottom pull
Bottom Bracket 68mm PF30 full carbon BB shell
Seatpost 27.2 seat post diameter for comfort, 400mm length recommended
Seat Clamp 31.8 Seat collar (bolt type)
Dropout Style 142x12mm thru
Accessory Mounts 2 waterbottle mounts
Cable routing Internal (derailleur/Di2 compatible), External (brakes)
Intended Use Race, Sport, Cyclocross
Weight 1480g (Frame and fork only)

Note: Components are subject to change without notice.

A: Seat Tube Length 470mm
B: Effective Top Tube 510mm
C: Stack 529mm 545mm 565mm 582mm 603mm 622mm
D: Reach 363mm 369mm 377mm 393mm 401mm 409mm
F: BB Drop/Rise 68mm 68mm 68mm 65mm 65mm 65mm
G: Head Tube Length 100mm 115mm 135mm 155mm 175mm 195mm
H: Head Tube Angle 70.5º 71º 71.5º 72º 72.5º 72.5º
I: Seat Tube Angle 74.5º 74º 73.5º 73.5º 73º 72.5º
J: Standover Height 721mm 745mm 769mm 797mm 823mm 848mm
K: Chainstay Length 425mm
L: Wheelbase 993mm 999mm 1010mm 1028mm 1037mm 1052mm
Suggested Rider Height 5'1" - 5'3" 5'3" - 5'5" 5'5" - 5'9" 5'9" - 5'11" 5'11" - 6'3" 6'3" - 6'5"
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Q & A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 2 answers
Where is the frame made?
PakFelix on Apr 14, 2017
BEST ANSWER: Frame sticker states proudly made in Vietnam.
Does this frameset include the headset?
A shopper on Mar 27, 2017
BEST ANSWER: Yes, almost every Niner frame includes a headset.

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Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.