Home»Electrical Accessories»Conversion Kits»For Carveboards»GUMMIES to URBAN Carveboard Conversion kit »Gummies to Urban CARVE Conversion kit with 4x Custom Wheels SINGLE Mount

425 long x 15mm wide for use with original 2019 Pro Belt Drive & 62 Tooth Urban pulleys

This ia 425mm long x 15mm wide High Torque Drive (HTD) Re-enforced Rubber Belt, which has 5mm Tooth Spacing (5M). This Belt is High Power rated (HP) & arguably over engineered for our application as the belt is made in Germany by the world famous company called STRONGBELT, who usually supply into heavy industry public sector applications which demand much more stringent requirements of any electric skateboard! This belt is used to transfer the power from the Motor & Motor Pulley into power at the rear wheels of a TRAMPA Electric Mountainboard.

TRAMPA opted to set a new standard in E-Skating, becoming the first in the world to fit to all of its E-Boards, a 15mm wide TRANSMISSON BELT. Our standard 15mm belt is almost double the width of nearly all other E-Sk8's out there, they tend to use a flimsy off the shelf 9mm transmission belt which are prone to stretch, slip & ultimately snap. Using a re-enforced 15mm wide High Power Belt reduces stretch, eliminates slip & as a consequence provides a constantly smooth whilst incredibly intuitive power delivery direct to the rear Drive Wheels of your board. When accelerating or engine breaking (KERS), even from a standing start the STRONGBELT power is smooth & does not slip, or strain the motor, it does a damn gooood job!.....

STRONGBELT, as their name suggests, is a Heavy Industry German Brand that usually supplies the likes of Train manufacturers where serious levels of quality with no excuses on failure are expected from the product, as failure for such an item is serious & may result in death! STRONGBELT weave KEVLAR into their Pulley Belts, Kevlar is one of the strongest fibers known to man, its often added into materials to gain extra strength.... STRONGBELT have the best reputation in the Power Transmission Industry for NO stretching or snapping & we have high expectations from this quality item. 

These extra quality details in the production of our electronic motor drives, provides the maximum responsiveness achievable whilst maintaining a super smooth power delivery to the rider at all times. 

62 Tooth Slave Pulley for URBAN Treads tyres - Perfect gearing for the little tyres :-)

The 62 Tooth Slave Pulley will give you the perfect final gearing when fitting the small URBAN TREADS TYRES :-) Fitting this Pulley will transform your Electric longboarding life completely :-)

This Pulley is fitted as standard to the amazing URBAN Carverboard & the new URBAN Longboard which are due out soon.... :-)

Custom 15mm wide Motor Pulley 13, 14 or 15 tooth

TRAMPA's 15mm wide 13-15 Tooth Motor Pulleys connect directly to the Motor Axle & are secured into position using a Magnetic Fixing Key & 4mm Locking Grub Screw.

These custom made Motor Pulley Wheels  fit 15mm wide STRONGBELTS, which should never stretch or break whilst at the same time providing a very smooth power delivery to the user - even from a standing start.

Choice of Aluminium or Black Steel. Aluminium Pulleys are perfect for those looking to save every gram possible on their board - Black Steel Pullys are heavier, but much harder wearing.

Changing your Motor Pulley &/or Drive pulley wheels will drastically change the performance of your ride... :-)

13 Tooth
Best performance for climbing steep inclines.

14 Tooth 
Best all-round performance

15 Tooth 
Best performance forreaching top speeds.

The KEYWAY connects between the Motor Pulley & the Motor Axle Shaft to eliminate slip under power 3x3x8mm

TRAMPA's Motor Axle Shaft to Pulley KEYWAY measures 3 x 3 x 8mm. It connects into the Motor Pulley when mounted onto the motor Axle Shaft & is used to center the pulley on the Axle & to assist in delivering all the power from the motor without slip! This KEYWAY will fit to all TRAMPA motors amongst others.

TRAMPA's Axle length measures 38.5mm (from motor housing to end of shaft) & has a Diameter of 8mm. The centre of the key (3 x 3 x 8mm) sits 16.70mm away from the Motor front. Front side of Motor to Center of Key! Deduct 4mm & you have the length from front side of motor to the start of key....

M4 x 10mm TORX Dome/Button Headed Head Bolt Marine Grade Stainless Steel TORX

TORX Screws are less likely to strip out when compared to a hex screw, because of the way the load is distributed and applied between the tool and the hardware. Because of this load distribution, the height of the head of the bolt can be reduced - making them nice & flush. 

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.

M4 x 4mm Grub Screw M4 x 4mm Motor Pulley Grub Screw - Connects the Motor Pulley onto the Motor Axle Shaft

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.

M4 x 35mm Socket Capped Allen-Key Bolt - Marine Grade Stainless steel with locking paste

TRAMPA's M4 x 35mm Socket Capped Bolt is made using A4 Marine Grade Stainless Steel. This Bolt is used to assemble the TRAMPA HYPA HUBS. The socket capped head of the Bolt fits neatly into the Bolt housing of the HYPA HUB marrying into the M4 nut located in the housing on the other side of the hub.

Weighing just 3 grams each these bolts are very lightweight. They look very sexy & are totally non corrosive. Using Marine Grade Stainless Steel, means these Bolts will never rust on you! They can cope with the most harsh of weather conditions & they laugh in the face of sandy/salty beaches or muddy freeride tracks, which do turn other manufacturers Nuts & Bolts into corrosive rusting wrecks! As well as being Non Corrosive all of the TRAMPA Bolts are diped in  BLUE THREAD LOCKING PASTE to ensure an extra strong secure fix between the Nut & the Bolt.

You will need a 3mm Allen Key to tighten & loosen the Nuts & Bolts from the hub. Ensure all your Nuts & Bolts are tight before riding!

M4 Nyloc Nut - Marine Grade stainless steel Nylock Nut - Hub Nuts

Introducing TRAMPA's M4 (4mm Shaft) A4 Marine Grade Stainless steel Nylock Nut. This Nylock Nut will fit to all M4 Bolts regardless of their length. This A4 Marine Grade Stainless Steel Nut will never rust on you! It is fitted with the world renowned NYLOCK System (Nylock is a nylon locking system where Nylon is pasted into the threads of the nut so that when the bolt is tightened into the nut the nylon grabs the thread of the bolt holding it locking it in the thread ensuring things do not vibrate loose or fall off when being ridden on rough terrain like that which a Mountain or Kiteboard endures. The NYLOCK thread locking security System is fitted as standard to all TRAMPA Nuts. 

This Nut is used to fix to tighten to the M4 Socket Capped Bolts that hold the HYPA & SUPERSTAR hubs together. To fit the nuts M4 use an 8mm spanner or  8mm Ratchet Socket to turn the Nut onto the Bolt whilst holding the bolt with a 3mm Allen Key. Always ensure your Nuts & Bolts are tight before you ride!

M4 x 20mm Hex Spacer - 5 Spoke Wheels to Slave Wheels on OBD & ORRSOM Boards

Used for connecting Slave Pulleys to Hubs using a 12-FIFTIES Motor Mount. 

x5 Required for HYPA hubs
x6 Required for SUPERSTAR / MEGASTAR hubs

PRECISION Shim spacer - STAINLESS STEEL - Bridges tiny gaps on axles - 9.525 x 13.525 x 1mm

This tiny STEEL Shim Spacer is precision made to give maximum performance! It is used to hold the bearings in the perfect position & also to bridge tiny gaps on the axles, ensuring an accurate fit with NO rattles!

The Shim spacer slips onto the axle fitting either side of the Bearings when the wheel is being fitted onto 9.525mm Axles.

This tiny spacer positions the wheel perfectly on the axle, holding the Bearing in the best possible place to help achieve maximum spin rate for the wheel. Its little parts like these that suffer the most amount of abuse, especially when they are used in the harsh conditions that they are. Check from time to time they are in good order & possibly replacing them every now & then this good proactice will ensure your board stays in tip-top condition, always!

Internal Bearing support spacer used with 8mm O-Ring on 9.525mm axles - 9.525 x 13.525 x 16.5mm

This special Spacer measures 12mm (id) x 16mm (od) x 16.5mm (long) & is known as a Bearing Support Spacer. This Bearing Support Spacer fits between the Bearings, along side the 10mm O-Ring when fitting Bearings into a TRAMPA hub when mounting the wheel onto 12mm Axles.

Over time, during the usage of your board, the bearings & spacers are put under a lot of force. Ultimately this force has to go somewhere... The Bearings use a Steel ring in their assembly where as the Bearing Support Spacers are made from Aluminum. Steel is much stronger than Aluminum & when forced against each the aluminum will loose out every time! This is what happens to your spacers between the bearings, the Bearings put force onto your spacers as a consequence over time the spacers shrink... With enough time its possible for an annoying rattle to start.... That's when you fit these 16.5mm spacers with the little 10mm O-Rings to prevent the rattles!! :-)

Mountainboard ABEC 5 Bearing 6001 2RS (12 x 28 x 8mm) Removable sidewalls with Embossed Logo

Bearing conversion Spacer converts 12mm Bearings to fit 9.525mm Skate & Spring Truck TiTanium Axles

Use this handy little part to convert 12mm TRAMPA bearings to fit onto 9.525mm (3/8ths of an inch) Axles... You will commonly find 9.525mm axles on Skate Trucks or Trucks with Titanium Axles. Simply slip the Conversion Spacer into your 12mm Bearing & then insert the Wheel back onto the axle.... Couldnt be easier.... :-)

The pressed aluminium is accurately made so it fits snugly into your bearing and tightly slides over the axle. The flanged Rim allows the axle nut to tighten without squashing the bearing wall, ensuring free spinning maximum performance from your bearings at all times. The sleeve can be re used over and over again but remember to replace your bearings regularly....

8mm Rubber O-Ring to fit in Bearings - 2mm Section x 8mm Bore NITRILE 70

This O-Ring should be fitted when a 9.525 x 16.5mm Bearing Support Spacer is fitted into the wheel assembly when fitting a wheel onto 9.525mm Axles. It fits alongside the Bearing Support Spacer, in-between the Bearings. This O-Ring prevents rattles from the spacer against the bearings. Over time, during the usage of your board, the bearings & spacers are put under a lot of force. Ultimately this force has to go somewhere... The Bearings use a Steel ring in their assembly where as the Bearing Support Spacers are made from Aluminum. Steel is much stringer than Aluminum & when forced against each the aluminum will loose out every time! This is what happens to your spacers between the bearings, the Bearings put force onto your spacers as a consequence over time the spacers shrink... With enough time its possible for an annoying rattle to start.... That's when you fit these little O-Rings!! :-)

HYPA Hub 3.75x 2 Inch - Any Colour you like!

TRAMPA's 6 spoke HYPA Hub is by far the lightest & weight for weight compared, the strongest 3.75-inch hub on the market today!

The HYPA hubs 6 spoke design is technically advanced & is manufactured using original Du-Pont materials & the very latest in precision injection molding machinery - No quality expense is spared! This deluxe combination of technical design, top quality machinery & original genuine materials, creates a product that is far superior to all of our competitions, resulting in performance that is well beyond normal expectations. This extra performance means the TRAMPA HYPA hub can handle much higher than recommended tyre inflation pressures, generating substantially higher than normal roll speeds. Back in the day during testing, our crash test dummies (i mean the Team riders) commonly rode with these hubs well above 80psi & beyond.... 

The HYPA hubs are held together using only the best Marine Grade (A4) Stainless steel Nuts & Bolts so they definitely wont rust on you (EVER) & are therefore perfect for bad conditions. All the Bolts used by TRAMPA have been dipped in a special Blue Locking Paste & all the Nuts are fitted with the world renowned Nylon "Nylock" Nut locking System, all these no expense spared small details ensure you get the absolute best hub possible!

HYPA hubs are available in loads of different colours & surface finishes, all of which are TRAMPA embossed between the spokes proving the top quality! Do not buy imitations as they will not perform the same!  TRAMPA’s own high class Steel Bearings, (Genuine  ABEC 5 rated Bearings) push perfectly into the HYPA hub bearing housing, guaranteeing the fastest spin rate to the wheel possible. Use either Bearing reducer sleeves into 12mm Bearings or use TRAMPA's 10mm Bearings to fit the HYPA hubs onto smaller sized skate axles. HYPA hubs are compatible with all known 8-inch tyres currently on the market including MBS & Scrub. Put quite simply – HYPA hubs are by the Best!

Along with many other applications that these wheels will fit too, the HYPA hub will fit and accept ALL the other brands of mountain boards on the market including MBS, SCRUB & KHEO, so when you are looking for an upgrade to your ride you know where too look! Basically the HYPA Hub will fit to anything that uses a Imperial 7/16ths (9.52mm) or 12mm bearings to fit onto the axle. If you already have your own 12mm bearings there are conversion spacers available to convert your 12mm bearings to work on the 7/16ths Imperial (9.52mm) skate axles and a different size spacer to convert them to fit 10mm (metric) scooter axles (see associated parts for details).

Bearings are supplied at a discounted price when purchased with hubs...

Rim Diameter 3.75 Inch
Rim Width      2 Inch or 50mm
​Fits all Tyres with 3.75 Inch rim inflating up to 8 inch in Diameter

URBAN TREADS 6 Inch Tyre measures 3.75 x1.75 x6.5 Inch or 165 x45mm x3.75 inc - Fits all 3.75 inch Hubs

Produced at the INNOVA Factory, TRAMPA's own 3.75x 2x 6.5 Inch or 165x 45mm Super Low profile URBAN TREADS tyres have been specifically designed to fit TRAMPA's incredibly strong & sexy range of 3.75 Inch hubs. 

We wanted to radically change the rough ride experience of that when riding with regular style longboard wheels, even the super-soft GUMMIES tyres can feel harsh when riding on not so smooth surfaces such as when riding in Urban/City environments.... We all know the pavements & roads are far from a perfect surface so much so that sometimes its almost impossible to ride regular Longboard wheels, some of the pot holes around me are terrible but with these URBAN TREADS tyres fitted you can smash through all the imperfections whilst still enjoying that small wheel fast turn feel... 

TRAMPA's 6.5 Inch URBAN TREADS tyres are arguably the Premium Tyre choice when it comes to requiring lots of grip from Small sized wheels. Produced with whats known as a 'High TPI casing' the rubber compound used is 'super soft & very Grippy'. TPI means Threads Per inch & the URBAN TREADS tyre, being premium, uses thousands of very fine threads per Inch in its construction to stitch between the 'outer lightweight nylon Rims', the length of the threads in turn gives the wide construction shape to the tyre... having a High TPI means the tyre's construction is incredibly strong whilst still very supple, like a posh bicycle tyre. 

Having a High TPI & using hefty amounts of thick Motorcycle rubber means not only is the construction of the tyre incredibly strong but it will also wear incredibly well too. This extra strength in turn allows the tyre to be run at both, incredibly low tyre pressure or should the circumstances require (such as a skate park where you need to pump hard) inflated to being incredibly hard, the URBAN TREADS tyres can easily handle our factory set limit of 65psi. We have herd of some of the crazy Lab Rats we use (i mean TRAMPA team riders) are inflating URBAN TREADS over 100psi (i dont think their pump will allow them to get any more air in haha) & with currently no problems to report... But for sure, if one pop's at 100psi it will certainly make one hell of a noise!! BANG!!​ haha! :-)

Riding on such a small sized tyre gives the most radical performance change to literally every board in the TRAMPA range. There is no doubt the tyre was developed specifically for the URBAN CARVER BOARD & more in particular the ELECTRIC URBAN CARVE BOARD where both products use a smaller deck & the smaller sized Mini Spring Trucks system,  the smaller board needed a slightly smaller tyre than that of the full sized 8 inch ATB decks to compliment the overall product size, so in true TRAMPA style we made the URBAN TREADS Tyre special for that application but since then we have found over these last cold wet winter months that the 6.5 inch URBAN TREADS tyres have also become the choice tyre for Mountainboards who are maintaining their riding skills in the out of season period by riding in indoor Parks or Tracks, just ask Sonnie - TRAMPA Pro Team rider, who has literally not stopped riding indoor skate parks to retain his fitness through the winter since the release of these new tyres...

TRAMPA's Electric boards have amazing performance with a top speed of over 60kmph achievable on all models. When your hitting high speeds like this you need good tyres on your board. Thankfully the URBAN CARVE range of decks are fitted with super sexy 6.5 inch URBAN TREADS Tyres connected to 62 Tooth Pulleys as standard. The reinforced, low profiled, wide center beaded with intelligently designed jagged edge around the side can be run on low inflation pressure which gives enough grip to cut muddy corners or nip down hard packed off road tracks no problem, but can also handle the super inflation for straight line flat out speed. If you wish to ride full speed we 1stly suggest you turn the SPRING ADJUSTERS clockwise to tighten the steering resistance, pre-loading more tension into your springs before you wish to hit high speeds will prevent potential wobble, and if you re beginning to feel a bit of wobble, then you should move the springs to the outside position before attempting to go any faster. If you still feel speed wobble when the springs are in the outside position, then you should then further add the TRAMPA DAMPA's to add even more steering resistance to enable you to be able to go even faster :-)

The Urban Tread tyre doesn't only handle high speeds easily but riding around town where you are likely to be bashing up & down curbs & dealing with cracks in the road or potholes, then you should be riding at much lower inflation pressures. The lower pressure gives so much comfort on the rougher stuff but of course does increase Drag making it harder for your batteries to perform well...