To stand a chance of winning this fantastic prize all you need to do is make sure that you are following both @SigmaSport and @feedbacksports on Twitter and then Tweet us a photo of your dirty bike.
If you don't have a Twitter account just yet, don't worry, setting one up only takes a couple of minutes and it's a really great way to keep up to date with all the latest Sigma Sport competitions and offers.
Entries close on 12th August at 2pm and we will pick the most creative photo to win the prize.
The winner will be notified they have won at 10am 13th August, so please check your Twitter feed to see if you have won.
How to Enter
2. Tweet a photo of your dirty bike and use the hashtag #FeedbackComp to submit your entry
Terms and Conditions
To enter you must tweet an image via twitter.com, mentioning both @SigmaSport and @FeedbackSports, using the hashtag #FeedbackComp. You must also follow both @SigmaSport and @FeedbackSports to be eligible to win. Only images submitted via Twitter will be eligible to win. Entries will be accepted from 12:00BST, 29/07/2015 - 14:00BST, 12/08/2015. The winner will be announced at 10:00BST on 13/08/2015 via Twitter.
Get social with Sigma Sport