Carburetor Kits for Montesas
We have kits for some Montesas and jetting for others.   Kits here are for Cota 123, Cota 247, Cota 348 & 349 and the Modern Cota 315.
Cota 123 Kit
Montesa Cota 123s came with a 25mm AMAL Concentric carburetor that is flange mounted.  We replace that with a 21mm OKO D slide that gives much better throttle response and power.  The kit also includes a thinner heat block to replace the original and a manifold adapter to convert the manifold to spigot mount.  Your existing cable should work and the airbox hose will fit the OKO intake.  If the back tab on the top of the OKO hits the frame, it can be filed off.
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Cota 247 Kit
Montesa Cota 247s came with a 27mm AMAL Concentric carburetor that is flange mounted.  We replace that with a 26mm OKO D slide that gives much better throttle response and power.  The kit also includes a thinner heat block to replace the original and a manifold adapter to convert the manifold to spigot mount.  Your existing cable should work and we supply a sleeve for the intake so the original airbox hose fits.
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Cota 348 & 349 Kit
Montesa Cota 348s and 349s came with a MKII AMAL carburetor that is spigot mounted.  After testing the 28mms and 26mms, we decided on the 26mm that gives much better throttle response and power.  The kit also includes a manifold sleeve to replace the original.  Your existing cable should work and since the intake is the same size as the AMAL, the airbox hose should be a direct fit.
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Other Montesas we have kits for
We have had the opportunity to put OKOs on a few other Montesas, including a mid-sixties Scorpion and a 1976 Enduro 250.  We also have jetting for the Cota 315.  The Cota 315 uses a 28mm and it comes jetted for the 315 and includes extra jets.  Kits for the Enduro and Scorpion come with manifold adapters.
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Select Kit Wanted
Kits for Scorpion and Enduro
Kit for Cota 315
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Float Bowl Options
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Clear Float Bowl
Cable Options
Venhill throttle Cable