Alpinestars GP Plus R v4 Rideknit Leather Jacket
- GP Plus R v4 RIDEKNIT® Leather Jacket is optimized for superior freedom of movement and rider comfort, and features extensive race-derived features and materials including a dedicated ‘Sport’ fit with pre-curved arms for maximum riding performance, and race-proven protection on shoulders and elbows
- Alpinestars composite stretch technology, A-CS® Plus, stretch panels on the torso for exceptional breathability, comfort, and freedom of movement, as well as delivering a lighter weight and a lower profile than a traditional leather accordion panel (the A-CS® Plus panels are about nine percent lighter than leather panels). Another key advantage of using A-CS® Plus is its superior stretch performance; A-CS® Plus has about 30% elongation, and offers an increase in tear resistance of 300% compared to HRSF (Hyper Resistant Stretch Fiber), and an increase in cut resistance by 600% versus leather
- 1.3 mm ‘Race’ grade leather construction for optimum blend of abrasion resistance and comfort
- RIDEKNIT® engineered inner arms; RIDEKNIT® combines high abrasion and tear resistance with high flexibility, comfort and mechanical stretch while still delivering superior comfort and high levels of breathability
- Extensive technical stretch panels under the arms, on the inner arms, and around the neck for an optimized fit. Dual density DFS shoulders for superior friction control
- GP Lite elbow armor for impact protection in a key area
- Nucleon Flex Plus shoulder armor for superior impact protection
- Tech-Air® 5 and Tech-Air® 3 ready
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Sizing Information
This product is sold in European sizes. We measured a selection of these jackets and also tried them on our Fit Check mannequins. The overall sizing of the jackets is pretty much what we expected as compared to other Alpinestars jackets. The measured chest of these jackets run at just about 10 points smaller than the Euro size, so a size 56 Euro has a max chest of about 46”. If you have experience in fitting recent models of Alpinestars sport jacket, you’ll find this one fits comparably.
This jacket, being a sport style, is cut to fit snug and close to the body, but the taper from chest to waist isn’t as severe as you might find in more track oriented jackets. In this jacket, the taper from the chest to the waist is about 2”-3”. Those with a belly need to be careful about size selection to make sure the jacket will be big enough for both the chest and belly. To choose a size, I’d suggest you measure yourself with a tape and get your chest and belly size. Then you can use the size chart to pick the smallest size jacket that will be big enough for both your chest and belly using the chart below. If your waist is smaller than the “max” indicated in the chart, you can still have a good fit here by using the side waist adjusters.
Sizing advice for adding option armor: Adding chest or back armor to this jacket will change the fit. To account for that, I’d advise you to add one inch to your chest measurement if you plan to add a back protector before making your size selection from the chart. Add another inch if you want to add the chest protectors.
| Euro Size | Max Chest Size (inches) | Max Belly Size (inches) |
|---|---|---|
| 48 | 38 | 36 |
| 50 | 40 | 38 |
| 52 | 42 | 40 |
| 54 | 44 | 42 |
| 56 | 46 | 43 |
| 58 | 48 | 45 |
| 60 | 50 | 47 |
