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Size

Color

Version

Crankbrothers STAMP 7 Small Pedal

Crankbrothers STAMP 7 Small Pedal

129.90 €

mech hanger set JEFFSY MK2 & DECOY MK1 & PRIMUS MK1

mech hanger set JEFFSY MK2 & DECOY MK1 & PRIMUS MK1

19.90 €

Crankbrothers Gem Hand Pump

Crankbrothers Gem Hand Pump

19.90 €

Crankbrothers F15 Multitool

Crankbrothers F15 Multitool

39.90 €

Crankbrothers STAMP 7 Small Pedal

Crankbrothers STAMP 7 Small Pedal

129.90 €

mech hanger set JEFFSY MK2 & DECOY MK1 & PRIMUS MK1

mech hanger set JEFFSY MK2 & DECOY MK1 & PRIMUS MK1

19.90 €

Crankbrothers Gem Hand Pump

Crankbrothers Gem Hand Pump

19.90 €

Crankbrothers F15 Multitool

Crankbrothers F15 Multitool

39.90 €

24
26
24
26
JUNIOR

The JEFFSY PRIMUS JP 26 wants you to get out there and discover the world. Specifically developed for riders between 145 cm and 160 cm, its playful character and robust aluminum frame make it a keen partner for having fun. Whether you're on flowy trails, a long ride, or heading to the bike park to shred, uncompromising components such as the 140 mm Manitou Machete fork and the custom-tuned RockShox Deluxe Select+ shock will have your back anywhere.

Primus

Choose Yours

Wheels
Color
Size

Primus

Wheel size
24
26
Color / Size

inch

cm

145cm-160cm

Black Magic

One Size

3 June 2022

This bike has the earliest arrival

All Available Options

See Other Options

2,299.00 €

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Tech + Specs
  • Frame

  • Protection

  • Headtube

  • Internal Cable Routing

  • Chainsuck

  • Bearings

  • Virtual Four Link

Frame

Protection

Made from super-tough and wear-resistant PA 66, the downtube protector is bolted on and can be easily replaced. It is designed to wrap around the bottom bracket and thus provide extra protection for the side walls of the downtube from impacts and scratches. Additionally, the rubber chainstay and seatstay guards help prevent unwanted noise from the drivetrain.

Protection

Made from super-tough and wear-resistant PA 66, the downtube protector is bolted on and can be easily replaced. It is designed to wrap around the bottom bracket and thus provide extra protection for the side walls of the downtube from impacts and scratches. Additionally, the rubber chainstay and seatstay guards help prevent unwanted noise from the drivetrain.

Headtube

To optimize the weight to performance ratio, the contact surfaces for the integrated headset are pre-formed directly in the frame. Additionally, the ZeroStack design ensures a high level of durability thanks to the integrated bearing shells.

Internal Cable Routing

For optimal protection, all cables are routed almost completely through the frame. They are guided through the chainstay with internal cable tubes, while they are wrapped in foam as they pass through the main frame to reduce weight and at the same time prevent noise. All cable ports are protected against the ingress of dirt and water with cable plugs. Additionally, the cables are secured on the head tube with cable clamps and they are routed over the main pivot to prevent chafing.

Chainsuck

The inconspicuous chainsuck plates protect the frame from damage caused by a dropped chain keeping critical areas out of harm's way.

Bearings

Extra seals protect the high-quality, double-sealed full complement bearings to keep water and dirt out and help prolong the service life.

Virtual Four Link

Our award-winning V4L suspension technology provides sensitivity off the top, with good mid-stroke support and plenty of end-stroke progressivity. The nice pop helps get the bike airborne whenever wanted, while the end-stroke progressivity makes sure the rear shock doesn't bottom out even on monster jumps. The high amount of anti-squat keeps the rear suspension neutral and improves pedal efficiency.

Protection

Protection

Made from super-tough and wear-resistant PA 66, the downtube protector is bolted on and can be easily replaced. It is designed to wrap around the bottom bracket and thus provide extra protection for the side walls of the downtube from impacts and scratches. Additionally, the rubber chainstay and seatstay guards help prevent unwanted noise from the drivetrain.

Protection

Made from super-tough and wear-resistant PA 66, the downtube protector is bolted on and can be easily replaced. It is designed to wrap around the bottom bracket and thus provide extra protection for the side walls of the downtube from impacts and scratches. Additionally, the rubber chainstay and seatstay guards help prevent unwanted noise from the drivetrain.

Headtube

Headtube

To optimize the weight to performance ratio, the contact surfaces for the integrated headset are pre-formed directly in the frame. Additionally, the ZeroStack design ensures a high level of durability thanks to the integrated bearing shells.

Internal Cable Routing

Internal Cable Routing

For optimal protection, all cables are routed almost completely through the frame. They are guided through the chainstay with internal cable tubes, while they are wrapped in foam as they pass through the main frame to reduce weight and at the same time prevent noise. All cable ports are protected against the ingress of dirt and water with cable plugs. Additionally, the cables are secured on the head tube with cable clamps and they are routed over the main pivot to prevent chafing.

Chainsuck

Chainsuck

The inconspicuous chainsuck plates protect the frame from damage caused by a dropped chain keeping critical areas out of harm's way.

Bearings

Bearings

Extra seals protect the high-quality, double-sealed full complement bearings to keep water and dirt out and help prolong the service life.

Virtual Four Link

Virtual Four Link

Our award-winning V4L suspension technology provides sensitivity off the top, with good mid-stroke support and plenty of end-stroke progressivity. The nice pop helps get the bike airborne whenever wanted, while the end-stroke progressivity makes sure the rear shock doesn't bottom out even on monster jumps. The high amount of anti-squat keeps the rear suspension neutral and improves pedal efficiency.

sGeometry Sizefinder
One Size
145 cm - 160 cm | 4'9" - 5'3"

This size table is only a suggestion. The optimal frame size depends also on your personal riding style.

Toptube
Reach
Stack
Seattube
Chainstay
Headtube Angle
Seattube Angle (eff)
bb drop
wheelbase
headtube
bb height

one-size

Toptube
533 mm
Reach
397 mm
Stack
549 mm
Seattube
355 mm
Chainstay
415 mm
Headtube Angle
65,5° / 66°
Seattube Angle (eff)
76,5° / 77°
bb drop
-5 / 4mm
wheelbase
1105 mm
headtube
95 mm
bb height
340 / 349 mm
 

one-size

Toptube
533 mm
Reach
397 mm
Stack
549 mm
Seattube
355 mm
Chainstay
415 mm
Headtube Angle
65,5° / 66°
Seattube Angle (eff)
76,5° / 77°
bb drop
-5 / 4mm
wheelbase
1105 mm
headtube
95 mm
bb height
340 / 349 mm
Primus 2021

Primus 2021

PDF | 5.58 MB

Choose Your jeffsy-primus

Primus

24

26

2,199.00 €
Frame Alloy 130mm
Fork MANITOU MACHETE JUNIT
Shock MANITOU McLeod
Drivetrain SRAM NX
Go to bike
Alternatives

YT
Range

Dirt
Junior
Enduro
YOU ARE LOOKING FOR AN ALTERNATIVE?

If you're wondering whether this is exactly the right bike for you, it might be worth checking out a different category as well.