ROCKBROS suction cup bike rack is a perfect way to carry your bikes during road trips and camping excursions. Single heavy-duty fork clamp to securely hold your bicycle by the front fork. Adjustable mounting clamps make it easy to install and switch between multiple compatible vehicles. Artistic design, stylish rack lighten cycling sports and fit your bicycle. Let you enjoy the trip more conveniently. Installations: Clean up the car roof and sucker to ensure no water, sand, and dust Install the sucker on the rooftop. In particular, press the sucker hardPress the sucker with great strength and press the cylinder rod till you can't see the white line ( usually 30-45 seconds )Fix the fork with quick release on the front sucker Step Confirm the rear wheel position and fix the rear wheel and pedal Attention before use: Advise the speed less than 120 km/hPlease check the cylinder rod white line before usingIf installed on the car with a sunroof , please don't open the skylineWhen not in use for a long time, please take it down and put it away to prolong service life.The maintenance lube is not included in the package, because it is an embargoed item in international transportation. You can find a special silicone oil at your local shop to replace the maintenance lube.Please note that the front roof rack should be installed in a flat place(like the car roof). If installed on the front windshield which the curvature is too large, the strong suction of suction cup will crack the glass. Strong Suction & Wide Apply Vacuum pumping ensures firmness and fixes the suction cup firmly on the roof of the car, suitable for both mountain bikes and road bikes, meet more cycling needs. You can fix the bike on the roof safely and start to enjoy the trip. Multiple Choice for 1, 2, 3 Bikes A variety of styles to meet a variety of needs, whether it is 1, or 2, 3 bicycles, you can find the suitable choice and travel conveniently without concern. When the bike rack is not in use,attach the suction cup protection cover, extend service life, save the awkwardness of nowhere to put it. ROCKBROS SUCKER BIKE RACK ENJOY CYCLING , ENJOY YOUR LIFE! 9mm Adaptor 100mm Axle Length 12mm Adaptor 100mm Axle Length 15mm Adaptor 100mm Axle Length 15mm Adaptor 110mm Axle Length 20mm Adaptor 110mm Axle Length Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.5 out of 5 stars 175 4.5 out of 5 stars 175 4.5 out of 5 stars 175 4.5 out of 5 stars 175 4.5 out of 5 stars 175 Price $9.99$9.99 $9.99$9.99 $9.99$9.99 $9.99$9.99 $9.99$9.99 Name 9mm Adapter 100mm Axle Length 12mm Adaptor 100mm Axle Length 15mm Adaptor 100mm Axle Length 15mm Adaptor 110mm Axle Length Seller SKU 20mm Adaptor 110mm Axle Length Design for Suction Cup Bike Rack for Car Roof Top Sucker Suction Cup Bike Rack for Car Roof Top Sucker Suction Cup Bike Rack for Car Roof Top Sucker Suction Cup Bike Rack for Car Roof Top Sucker Suction Cup Bike Rack for Car Roof Top Sucker 1 Bike Suction Cup Bike Rack Max 2 Bikes Suction Cup Bike Rack Max 3 Bikes Suction Cup Bike Rack 1 Bike Suction Cup Bike Rack Max 2 Bikes Suction Cup Bike Rack Add to Cart Add to Cart Add to Cart Add to Cart Buying Options Customer Reviews 4.2 out of 5 stars 601 4.2 out of 5 stars 601 4.2 out of 5 stars 601 4.3 out of 5 stars 214 4.1 out of 5 stars 103 Price $159.99$159.99 $206.99$206.99 $242.99$242.99 $159.99$159.99 — no data Design for Car Roof Car Roof Car Roof Car Roof Car Roof Color Black Black Black Red Red Bikes Max 1 Bike Max 2 Bikes Max 3 Bikes Max 1 Bike Max 2 Bikes