inquirylist

The JUBU short/ultra short rear axle ratio for SEVEN 275 is a real fun booster regarding the driving experience in your Cateram. With this kit, the car feels like the engine provides additional 20-30 hp without any engine upgrades.

To achieve this goal, we change the pretty long Caterham OEM gear ratio to a shorter JUBU ratio. This focusses the power of the engine to a narrower band of speed which leads to more torque on the wheels and a sportier acceleration. This leads - of course - to a lower top speed, but the theoretical top speed of 299 km/h of a Caterham with OEM ratio is for most of the drivers kind of irrelevant and leaves space for a shorter ratio.

Depending on your personal preferences, we can offer a short and an ultra-short variant with different ratios (pls. see options). This upgrade is a very inexpensive and minimal-inversive way to improve the acceleration capabilities of your car as well as your driving-fun.

We ship all components oil free, delivery can take place all around the world. As an option, we can also install the shorter gear ratio an OEM-housing provided by you or send you a fully assembled gearbox unit (incl. housing) without any delay in exchange of your OEM-unit (deposit demanded, pls. see options).

Benefits

• The car feels like you've added 20-30 hp
• Narrower gear hops and more harmonic shifting/ratio experience
• More torque (also in higher gears) and more agility of the engine
• JUBU-Gears in BMW OEM quality
• OEM-Sound of gearbox (no sawing noise, etc.)
• Absolutely no problems with MOT (no power upgrade)

Details

• OEM-quality
• Shorter ratios for all gears (1-5)
• Reduction of top speed (please see details at "ratios")
• Made in Austria

Gear/speed ratios

• JUBU short 275 with 195/50-15 rear tires: 219 km/h top speed at 7200 rpm, 100 km/h cruising speed at 3300 rpm in 5th gear
• JUBU short 275 with 215/55-13 rear tires: 215 km/h top speed at 7200 rpm, 100 km/h cruising speed at 3350 rpm in 5th gear
• JUBU ultra-short 275 with 195/50-15 rear tires: 210 km/h top speed at 7200 rpm, 100 km/h cruising speed at 3450 rpm in 5th gear
• JUBU ultra-short 275 with 215/55-13 rear tires: 207 km/h top speed at 7200 rpm, 100 km/h cruising speed at 3500 rpm in 5th gear
• Caterham OEM ratio with 195/50-15 rear tires: 257 km/h top speed at 7200 rpm, 100 km/h cruising speed at 2810 rpm in 5th gear
• Caterham OEM ratio with 215/55-13 rear tires: 253 km/h top speed at 7200 rpm, 100 km/h cruising speed at 2860 rpm in 5th gear

Fits for

• all Caterham SEVEN 275 models with BMW gearbox housing

Scope of delivery

• JUBU ring- and bevel gear in chosen ratio (OEM quality)
• 3 pcs. simmerings for driveshafts (inlet and outlet)
• 4 pcs. new bearings für das bevel gear and shoulder bearing

Options/Variants (please choose)

• Variant ("short" or "ultra-short")
• Installation of JUBU short ratio in provided gearbox housing
• Completely assembled Plug & Play kit incl. gearbox housing in exchange (we send you without any delay a tested and coated, fully assembled gearbox unit with the JUBU short/ultra-short gearbox ratio fully installed. After receiving and testing your OEM gearbox housing, we will refund you the deposit for the sent housing immediately
• JUBU Drexler limited slip differential (with or without installation)
• Special gearbox oil for limited slip differentials

If you have any questions about the product or how to order, please do not hesitate to contact us by phone or email.