The ‘Primer’ is a bike built for 29 or 27.5+ wheels with geometry designed for aggressive all mountain riding. It is handbuilt in Canada by local fabricator Mike Truelove, in small batches that are painted individually for each customer.
The Primer uses what we would describe as our most progressive 29er geometry to date. The shortest stays possible. Lower than ever BB height. A steep seattube with a slack head angle, low stack headtube and long front center. This combination is the best descending 29er we’ve ridden yet but it still climbs as well as anything we’ve built before.
Building a frame with 27.5+ compatibility means that we had to redesign our ‘yokel’ junction to maximize the chainstay layout clearance. Incorporating a BB92 bb shell and boost dropout spacing also accommodates the most room possible for tire widths as wide as 3.0.
- Looking to spend a little less? Check out the Rootdown.
Due to the fact this item is custom painted, lead times may vary.
If you select a raw option, we'll be in touch about your paint job and delivery date once you complete checkout. Woo!
Almost all Chromag frames are made from quality 4130 chromoly steel tubing. Chromoly is an abbreviation for chromium-molybdenum indicating the materials that the steel is alloyed with.
The added chromium helps increase the steels hardenability and also provide some corrosion resistance.
The molybdenum helps to increase the toughness of the steel.
It has a high tensile strength but is also malleable which is what gives our frames their notorious ride quality and feel. Chromoly is often used when more strength is required than that of mild carbon steel.
It falls under the AISI (American Iron & Steel Institute) 41XX designations which is where the “41” comes from. The “30” indicates it contains approximately 0.30% carbon by weight.
Chromoly is much stronger than traditional 1020 steel and it has a higher strength to weight ratio and high tensile strength, which means we can use less material and achieve a product that can withstand the abuse that riders love to throw at it.
|Typical Rider Height||5'2"-5'7||5'5"-5'10||5'8"-6'2"||6'-6'4"||6'3"-6'7"|
|Top Tube Length (Effective) TTL||572mm||590mm||614mm||637mm||656mm|
|Seat Tube Length STL||381mm||419mm||445mm||470mm||508mm|
|Stand Over SO||687mm||695mm||735mm||750mm||775mm|
|Head Tube Angle HTA||64°|
|Seat Tube Angle STA||76°|
|Chain Stay Length CSL||415mm|
|Bottom Bracket Height BBH||29" - 320mm // 27.5x3.0" - 317mm // 27.5x2.8" - 315mm|
|Head Tube Length HTL||105mm|
|Fork Offset FO||42mm|
|Seatpost Size||31.6mm. Stealth Routing.|
|Headset Size||44mm-56mm tapered|
|BB Shell||BB92 (press fit)|
|Rear Axle||184mm, M12 x 1.75mm (Boost 148 Spacing) - Included|
|*Measured with a 160mm fork. Optimal 140-160mm. Measurements in mm.|
|PARTS||GX EAGLE BUILD||EAGLE XO1 BUILD|
|FORK||Rock Shox LYRIK RC 160 SA
|Rock Shox LYRIK RC 160 SA
|STEM||Chromag HiFi 40mm||Chromag HiFi 40mm|
|HANDLEBAR||Fubars OSX 25mm Rise||Fubars OSX 25mm Rise|
|HEADSET||Cane Creek Forty ZS||Cane Creek Forty ZS|
|CRANK||SRAM GX-1400 1x X-SYNC||SRAM X1 EAGLE Carbon|
|BRAKES||SRAM Guide RS B1||SRAM Guide RSC B1|
|ROTORS||180mm Centreline||180mm Centreline|
|SHIFTERS||SRAM GX 12 SPD||SRAM X01 EAGLE|
|CASSETTE||SRAM XG-1275||SRAM XG-1295 EAGLE 10-50|
|REAR DERAILLEUR||SRAM GX 1X12||SRAM X01 EAGLE 1X12|
|WHEELSET||CHROMAG BA30 Rims with CHROMAG MAGNA Hubs 27.5+ or 29||CHROMAG BA30 Rims with CHROMAG MAGNA Hubs 27.5+ or 29|
|TIRES||Maxxis Minion Fr/Minion Rr||Maxxis Minion Fr/Minion Rr|
|SEATPOST||Chromag Dolomite||Chromag Dolomite|
|SADDLE||Chromag Trailmaster DT||Chromag Trailmaster DT|
|GRIPS||Chromag Squarewave||Chromag Squarewave|
|CHAIN||SRAM GX EAGLE||X01 EAGLE|
|FRAME ONLY||$1,900 CAD
RockShox Reverb Seat Dropper optional.
*US pricing applies to all US and International purchases.
To purchase a complete build, please contact us directly. We are happy to answer all your questions about our bikes and products. Call: 604-905-6667 Email: firstname.lastname@example.org