Primer 27.5+" / 29"
Aggressive all mountain riding.
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.
By Mike Truelove,
in British Columbia, Canada.
6.3lbs (Medium, Frame Only)
29 x 2.5” or 27.5 x 3.0”
Design optimized for a 160mm fork
Head Tube Badge
Bikes are special. The headtube badge is the finishing touch so we’ve always made a point of taking the time to do something interesting with it. Our headtube badges have changed over the years and are an indication of the time each bike was made. Whether it’s a cast bronze, or polished stainless steel, water cut aluminum or a 3D CNC carving, each one represents our commitment to detail.
Making modern chromoly frames is challenging when most of the tubes available on the market are from an era of mountain biking long past. After several years of frame production we reached the point where we could design and produce our own custom tubing for the majority of our frame tubes. This contributes to the unique look of many of our frames but more importantly allows us to configure our bikes exactly as we want for each design.
Our ‘Yokel’ design is a small machined junction on the chainstay that helps accommodate both tire clearance and chainring clearance. Our first versions were huge CNC yokes that bridged the entire front end of the chainstays. Over time we refined this to minimize weight by arranging our chainstay layout asymmetrically and reducing the yoke to a minimal size. It’s one of our most unique frame features and has been copied by other frame makers.
Custom Colour Choice
|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||578mm||603mm||622mm||648mm||667mm|
|Seat Tube Length STL||394mm||431mm||470mm||495mm||533mm|
|Stand Over SO||687mm||695mm||735mm||750mm||775mm|
|Head Tube Angle HTA||65°||65°||65°||65°||65°|
|Seat Tube Angle STA||75°||75°||75°||75°||75°|
|Chain Stay Length CSL||415mm||415mm||415mm||415mm||415mm|
|Bottom Bracket Height BBH||29" | 320mm
27.5x3.0" | 317mm
27.5x2.8" | 315mm
|Head Tube Length HTL||105mm||105mm||105mm||105mm||105mm|
|Fork Offset FO||51mm||51mm||51mm||51mm||51mm|
|Seatpost Size||31.6mm with Stealth Routing||Seatclamp Size||35mm|
|Headset Size||44mm-56mm tapered|
|BB Shell||BB92 (press fit)|
|*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, please contact us directly. We are happy to answer all your questions about our bikes and products. Call: 604-905-6667 Email: email@example.com