Radio's World Championsip winning Quartz frame is now available in a br&-new disc version offering even greater performance. This new disc-brake specific model premieres Radio's forged & CNC machined Sliding Dropout Disc System, integrated chain tensioner paired with a flat mount style caliper & internal cable routing to deliver the best braking system possible. Hydroformed 6061 alloy, Paradigm tubing throughout make the Quartz an incredibly lightweight frame giving you an amazing starting point if building a race BMX or as the perfect upgrade from your old frame. The Radio Quartz Pro XXL Frame has a 21.75" top tube length. section Product Specs
Material:  Aluminium HEAD TUBE ANGLE: 74° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 14.8" BB
Height: 11.6" WHEEL
Size: 20" STANDOVER
Height:  DROPOUT
Size: 10mm
- 15mm HEADSET TYPE:  Tapered 1 1/8"
- 1.5" BB TYPE:  Euro BRAKE MOUNTS:  Disc Brake Only GYRO TABS:  None WEIGHT: 3.64lbs (1.7kg) section Product Highlights BMX racing specific geometry Race specific frame Tapered tubing Hydroformed tubing for increased strength Built in chain tensioners shogun-image-section






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The Quartz Frame is a 2 time World Championship winning super light alloy race frame. Taking the track proven. Helium Frame as a base, Radio upgraded the frame to use their new Paradigm 6061-T6 hydroformed superior tubing to shed a considerable amount of weight compared to the Helium Frame. The Quartz also uses a forged dropout design which allowes it to be fully disc brake compatible when used with the Helium disc brake mount. section Product Specs
Material:  Hydroformed 6061 alloy, Paradigm tubing TOP TUBE LENGTH: 22.25” HEAD TUBE ANGLE: 74° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 14.8” BB
Height: 11.6" WHEEL
Size: 20" STANDOVER
Height: TBC DROPOUT
Size: 20mm HEADSET TYPE:  Integrated tapered 1-1/8” – 1.5” BB TYPE:  Euro SEAT TUBE DIAMETER: 27.2mm BRAKE MOUNTS: V-Brake WEIGHT: TBC section Product Highlights BMX Racing Specific Geometry Race Specific Frame Strong & lightweight Built in chain tensioners Disc brake mounts




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The Quartz Frame is a 2 time World Championship winning super light alloy race frame. Taking the track proven. Helium Frame as a base, Radio upgraded the frame to use their new Paradigm 6061-T6 hydroformed superior tubing to shed a considerable amount of weight compared to the Helium Frame. The Quartz also uses a forged dropout design which allowes it to be fully disc brake compatible when used with the Helium disc brake mount. section Product Specs
Material:  Hydroformed 6061 alloy, Paradigm tubing TOP TUBE LENGTH: 22.5” HEAD TUBE ANGLE: 74° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 15.2” BB
Height: 11.6" WHEEL
Size: 20" STANDOVER
Height: TBC DROPOUT
Size: 20mm HEADSET TYPE:  Integrated tapered 1-1/8” – 1.5” BB TYPE:  Euro SEAT TUBE DIAMETER: 27.2mm BRAKE MOUNTS: V-Brake WEIGHT: TBC section Product Highlights BMX Racing Specific Geometry Race Specific Frame Strong & lightweight Built in chain tensioners Disc brake mounts




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The Cobalt line combines proven geometry & dialled components giving you the best start out of the gate during the first days racing. The Cobalt Expert steps up to a 19.5" top tube, a longer 50mm reach cobalt stem, a slim radio pivotal seat & wider 1 3/8” Arisun XLR8 tyres. All Cobalt bikes feature fully sealed front hubs & integrated headsets, making them simply unstoppale when comparing price to spec. section Product Specs FRAME
Material: 6061 T6 alloy WHEEL
Size: 20" TOP TUBE LENGTH: 19.5" CHAIN STAY LENGTH: 13.6" HEAD TUBE ANGLE: 73° SEAT TUBE ANGLE: 71° FORKS: cr-mo, 1-1/8″ butted steerer tube, hi-ten fork legs, 23mm offset BARS: 4130 seamless cr-mo STEM:  Radio, Cobalt-toploader, ext. 50mm, alloy HEADSET: FSA, No.28, integrated headset, sealed, 1-1/8″ BRAKE MOUNTS:  Welded BRAKES: PROMAX “MV-87” alloy brake rear FRONT HUB: RADIO “ Cobalt” alloy CNC hub, fully sealed, 3/8″s, 28h, crmo axle FRONT RIM:  Radio, A-M5, double wall, 28H, alloy REAR HUB: RADIO “ Cobalt” alloy CNC hub, fully sealed, 3/8″s, crmo axle, 28h, flip flop REAR RIM:  Radio, A-M5, double wall, 28H, alloy TYRES:  Arisun, XLR8, 20″x 1-3/8″ SPROCKET:  CRANKS: RADIO “ Cobalt” forged alloy 3pc crank, 165mm long BB:  Radio, BSA square taper, sealed PEDALS:  Radio, Cobalt Pro, alloy SEAT:  Radio Cobalt Pro, combo seat GEARING: 42/16 WEIGHT: 8.95kg/ 19.73lbs section Product Highlights Expert sized BMX bike. Designed for the needs of racers who are 5ft"
- 5ft 4" (150cm
- 165cm) A BMX race specific bike great for those riders just getting started Strong & lightweight construction Sealed bearings throughout Integrated headset shogun-image-section



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The Cobalt line combines proven geometry & dialled components giving you the best start out of the gate during the first days racing. The Cobalt Junior steps up in size without packing on the pounds at only 8kg, this is one of the lightest Junior entry level bikes out theres. All Cobalt bikes feature fully sealed front hubs & integrated headsets, making them simply unstoppale when comparing price to spec. section Product Specs FRAME
Material: 6061 T6 alloy WHEEL
Size: 20" TOP TUBE LENGTH: 18.5" CHAIN STAY LENGTH: 12.85" HEAD TUBE ANGLE: 73° SEAT TUBE ANGLE: 71° FORKS: cr-mo, 1″ butted steerer tube, hi-ten fork legs, 23mm offset BARS: 4130 seamless cr-mo STEM:  Radio, Cobalt-toploader, ext. 40mm, alloy HEADSET:  Radio, integrated headset, sealed, 1″ BRAKE MOUNTS:  Welded BRAKES: PROMAX “MV-87” alloy brake rear FRONT HUB: RADIO “ Cobalt” alloy CNC hub, fully sealed, 3/8″s, 28h, crmo axle FRONT RIM:  Radio, A-M5, double wall, 28H, alloy REAR HUB: RADIO “ Cobalt” alloy CNC hub, fully sealed, 3/8″s, crmo axle, 28h, flip flop REAR RIM:  Radio, A-M5, double wall, 28H, alloy TYRES:  Arisun, XLR8, 20″x 1-1/8″ SPROCKET: RADIO alloy, 40t sprocket CRANKS: RADIO “ Cobalt” forged alloy 3pc crank, 155mm long BB:  Radio, BSA square taper, sealed PEDALS:  Radio, Cobalt Junior, nylon SEAT: RADIO “ Mini” combo seat GEARING: 40/16 WEIGHT: 8.07kg/ 17.78lbs section Product Highlights Junior sized BMX bike. Designed for the needs of racers who are 4ft 6"
- 5ft 1" (138cm
- 155cm) A BMX race specific bike great for those riders just getting started Strong & lightweight construction Sealed bearings throughout Integrated headset shogun-image-section



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The Cobalt line combines proven geometry & dialled components giving you the best start out of the gate during the first days racing. The Cobalt Mini is Radio's pint sized machine, scaled down & lighter build kit make this thing unrivalled out there on the track. All Cobalt bikes feature fully sealed front hubs & integrated headsets, making them simply unstoppale when comparing price to spec. section Product Specs FRAME
Material: 6061 T6 alloy WHEEL
Size: 20" TOP TUBE LENGTH: 17.5" CHAIN STAY LENGTH: 13.1" HEAD TUBE ANGLE: 72° SEAT TUBE ANGLE: 70° FORKS: cr-mo, 1″ butted steerer tube, hi-ten fork legs, 23mm offset BARS: 4131 seamless cr-mo STEM:  Radio, Cobalt-toploader, ext. 40mm, alloy HEADSET:  Radio, integrated headset, sealed, 1″ BRAKE MOUNTS:  Welded BRAKES: PROMAX “MV-87” alloy brake rear FRONT HUB: RADIO “ Cobalt” alloy CNC hub, fully sealed, 3/8″s, 28h, crmo axle FRONT RIM:  Radio, A-M5, double wall, 28H, alloy REAR HUB: RADIO “ Cobalt” alloy CNC hub, fully sealed, 3/8″s, crmo axle, 28h, flip flop REAR RIM:  Radio, A-M5, double wall, 28H, alloy TYRES:  Arisun, XLR8, 20″x 1-1/8″ SPROCKET: RADIO alloy, 38t sprocket CRANKS: RADIO “ Cobalt” forged alloy 3pc crank, 140mm long BB:  Radio, BSA square taper, sealed PEDALS:  Radio, Cobalt Junior, nylon SEAT: RADIO “ Mini” combo seat GEARING: 38/16 WEIGHT: 7.79kg/ 17.18lbs section Product Highlights Mini size. Designed specifically for the smallest racers. Approx 4ft 2"
- 4ft 10" (127cm
- 148cm) A BMX race specific bike great for those riders just getting started Strong & lightweight construction Sealed bearings throughout Integrated headset shogun-image-section



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The Cobalt line combines proven geometry & dialled components giving you the best start out of the gate during the first days racing. The Cobalt line took off so well that Radio decided to add a Pro size for 2021 allowing more riders to enjoy one of the best entry level racers out there. All Cobalt bikes feature fully sealed front hubs & integrated headsets, making them simply unstoppale when comparing price to spec. section Product Specs FRAME
Material: 6061 T6 alloy WHEEL
Size: 20" TOP TUBE LENGTH: 20.75" CHAIN STAY LENGTH: 14" HEAD TUBE ANGLE: 73° SEAT TUBE ANGLE: 72° FORKS: cr-mo, 1-1/8″ butted steerer tube, hi-ten fork legs, 30mm offset BARS: 4132 seamless cr-mo STEM:  Radio, Cobalt-toploader, ext. 50mm, alloy HEADSET: FSA, No.28, integrated headset, sealed, 1-1/8″ BRAKE MOUNTS:  Welded BRAKES: PROMAX “TX-117” alloy brake rear FRONT HUB:  Radio, Cobalt, alloy cnc, fully sealed, 3/8″ cr-mo axle FRONT RIM:  Radio, BX-32, double wall, 32H, alloy REAR HUB:  Radio, Cobalt, alloy cnc, fully sealed, 32H, flip flop, 3/8″ cr-mo axle REAR RIM:  Radio, BX-32, double wall, 32H, alloy TYRES:  Arisun, XLR8, front 20″x 1.95″ / rear 20″x 1.75″ SPROCKET: RADIO alloy, 44t sprocket CRANKS: RADIO “ Cobalt” forged alloy 3pc crank, 175mm long BB:  Radio, BSA square taper, sealed PEDALS:  Radio, Cobalt Pro, alloy SEAT:  Radio Cobalt Pro, combo seat GEARING: 44/16 WEIGHT: 9.95kg/ 21.93lbs section Product Highlights Pro sized BMX race bike for riders who need a full size BMX. Typically suited to riders 5ft 3" to 5ft 8" (160cm
- 175cm) A BMX race specific bike great for those riders just getting started Strong & lightweight construction Sealed bearings throughout Integrated headset shogun-image-section


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The Cobalt Pro was designed specifically for 1 1/8" steerer tubes, built with weight saving cap & side pockets. 6061-T6 alloy throughout the stem with a cast body & a forged top cap ensuring the Cobalt is strong without weighing more than is necessary. section Product Specs TYPE:  Top Load REACH: 50mm RISE: 23mm CLAMPING DIAMETER: 22.2mm WEIGHT: TBC ...

Radio's Race division are always looking for ways to create & update products to offer the best to the world of BMX Racing. The Helium Pro Disc Brake Mount is one of those to receive an update, giving it even more strength thanks to Radio using a cold-forged construction. The Pro Disc Brake Mount is designed to fit Radio Helium Pro & Quartz frames. Please note: this is the 140mm version of the Helium Pro Disc Brake Mount. shogun-image-section ...

Radio's Race division are always looking for ways to create & update products to offer the best to the world of BMX Racing. The Helium Pro Disc Brake Mount is one of those to receive an update, giving it even more strength thanks to Radio using a cold-forged construction. The Pro Disc Brake Mount is designed to fit Radio Helium Pro & Quartz frames. Please note: this is the 120mm version of the Helium Pro Disc Brake Mount. shogun-image-section ...