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Radio Raceline Helium Pro XL 21.25" BMX Frame


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Important Information-

This product is a special order item, and as such will be ordered from our supplier for you once your order has been placed. The above delivery time is an estimate based on times provided by our suppliers. In rare circumstances these maybe subject to change, but rest assured we will be doing everything possible to get your product to you ASAP! Upon placing your order you will receive a call from our team shortly after to keep you informed every step of the way.


Product Description


  • Top Tube Length (actual) 21.25" (540mm)
  • Chainstay Length (min.) 14.5" (368mm)
  • Dropout Size 20mm (inc. chain tensioner for 10/15/20mm)
  • Head Tube Angle 74°
  • Seat Tube Angle 71°
  • Head Tube Size tapered 1 -1/8" – 1.5" (125mm), integrated, 45/45 campy spec, ACB
  • Seat Post Size 27.2mm
  • Seat Tube Length 231mm
  • Bottom Bracket Height 11.6" (EU)
  • Wheel Size 20" x 1.75"
  • Rider Area 540.7mm
  • Extras Inc. PROMAX 402QX seat clamp
  • Weight (Inc. seat clamp) 1.840kg (4.05lbs)


  • Hydroformed 6061-T6 Alloy

After Over 3 Years Of Extensive Research And Development, Radio Raceline Is Beyond Excited To Bring You Our First Aftermarket Race Frame. The Helium Frame Is Constructed Of Hydroformed 6061-T6 Alloy And Has Been Tested On The Track And Designed In Conjunction With A Team With Bmx Race Knowledge Spanning 3 Decades. The Tubing Has Been Specifically Chosen To Ensure A Lightweight And Responsive Frame With An Incredibly Stiff Backend.

With Proven Hand Selected Geometry, Available In A Choice Of Sizes To Fit Every Rider. Every Frame Includes A Promax Quick Release Seat Clamp So You Can Warm Up And Cool Down Right When You Need To. You Can Expect To See Our Debut Frame On Podiums Across The Globe During The Upcoming Season.

Delivery & Returns

Basket Value

Shipping Method

Under £40

£40 and over

(2-4 days)



(Next Working day)

£4.99 £4.99

2-5 working days delivery(Mon-Fri)



Next Working Day Delivery
(Monday to Friday)



Saturday Delivery



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